15056517025 has 81 divisors (see below), whose sum is σ = 21676140633. Its totient is φ = 10366118400.

The previous prime is 15056517023. The next prime is 15056517059. The reversal of 15056517025 is 52071565051.

The square root of 15056517025 is 122705.

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

It can be written as a sum of positive squares in 4 ways, for example, as 553613841 + 14502903184 = 23529^2 + 120428^2 .

It is not a de Polignac number, because 15056517025 - 2¹ = 15056517023 is a prime.

It is a super-2 number, since 2×15056517025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15056517023) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 155221777 + ... + 155221873.

Almost surely, 2^15056517025 is an apocalyptic number.

15056517025 is the 122705-th square number.

15056517025 is the 61353-rd centered octagonal number.

It is an amenable number.

15056517025 is a deficient number, since it is larger than the sum of its proper divisors (6619623608).

15056517025 is an equidigital number, since it uses as much as digits as its factorization.

15056517025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 37.

The spelling of 15056517025 in words is "fifteen billion, fifty-six million, five hundred seventeen thousand, twenty-five".