11838528025 has 27 divisors (see below), whose sum is σ = 15031220511. Its totient is φ = 9249295440.

The previous prime is 11838528019. The next prime is 11838528061. The reversal of 11838528025 is 52082583811.

The square root of 11838528025 is 108805.

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

It can be written as a sum of positive squares in only one way, i.e., 4261870089 + 7576657936 = 65283^2 + 87044^2 .

It is not a de Polignac number, because 11838528025 - 2⁹ = 11838527513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25568944 + ... + 25569406.

Almost surely, 2^11838528025 is an apocalyptic number.

11838528025 is the 108805-th square number.

11838528025 is the 54403-rd centered octagonal number.

It is an amenable number.

11838528025 is a deficient number, since it is larger than the sum of its proper divisors (3192692486).

11838528025 is an frugal number, since it uses more digits than its factorization.

11838528025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 43.

The spelling of 11838528025 in words is "eleven billion, eight hundred thirty-eight million, five hundred twenty-eight thousand, twenty-five".