11557325025 has 45 divisors (see below), whose sum is σ = 21417125961. Its totient is φ = 6161326560.

The previous prime is 11557325023. The next prime is 11557325027. The reversal of 11557325025 is 52052375511.

The square root of 11557325025 is 107505.

It is a perfect power (a square), and thus also a powerful number.

11557325025 is a `hidden beast` number, since 1 + 1 + 557 + 32 + 50 + 25 = 666.

11557325025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11557325023) and next prime (11557325027).

It can be written as a sum of positive squares in 4 ways, for example, as 2011253409 + 9546071616 = 44847^2 + 97704^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 11557325025 - 2¹ = 11557325023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11557325023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 4836531 + ... + 4838919.

Almost surely, 2^11557325025 is an apocalyptic number.

11557325025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11557325025 is the 107505-th square number.

11557325025 is the 53753-rd centered octagonal number.

It is an amenable number.

11557325025 is a deficient number, since it is larger than the sum of its proper divisors (9859800936).

11557325025 is an frugal number, since it uses more digits than its factorization.

11557325025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800 (or 2397 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

Multiplying 11557325025 by its sum of digits (36), we get a square (416063700900 = 645030²).

The spelling of 11557325025 in words is "eleven billion, five hundred fifty-seven million, three hundred twenty-five thousand, twenty-five".