7750161225 has 27 divisors (see below), whose sum is σ = 13883765493. Its totient is φ = 4132715040.

The previous prime is 7750161197. The next prime is 7750161227. The reversal of 7750161225 is 5221610577.

The square root of 7750161225 is 88035.

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

7750161225 is a `hidden beast` number, since 77 + 501 + 61 + 2 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2559246921 + 5190914304 = 50589^2 + 72048^2 .

It is not a de Polignac number, because 7750161225 - 2¹⁵ = 7750128457 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7750161225.

It is not an unprimeable number, because it can be changed into a prime (7750161227) 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 26 ways as a sum of consecutive naturals, for example, 1317591 + ... + 1323459.

Almost surely, 2^7750161225 is an apocalyptic number.

7750161225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7750161225 is the 88035-th square number.

7750161225 is the 44018-th centered octagonal number.

It is an amenable number.

7750161225 is a deficient number, since it is larger than the sum of its proper divisors (6133604268).

7750161225 is an frugal number, since it uses more digits than its factorization.

7750161225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11754 (or 5877 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The cubic root of 7750161225 is about 1978.9595275639.

Multiplying 7750161225 by its sum of digits (36), we get a square (279005804100 = 528210²).

The spelling of 7750161225 in words is "seven billion, seven hundred fifty million, one hundred sixty-one thousand, two hundred twenty-five".