15872455200625 has 15 divisors (see below), whose sum is σ = 19834344480423. Its totient is φ = 12697884480000.

The previous prime is 15872455200617. The next prime is 15872455200631. The reversal of 15872455200625 is 52600255427851.

The square root of 15872455200625 is 3984025.

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

It can be written as a sum of positive squares in 7 ways, for example, as 15872311776049 + 143424576 = 3984007^2 + 11976^2 .

It is not a de Polignac number, because 15872455200625 - 2³ = 15872455200617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 99520945 + ... + 99680305.

Almost surely, 2^{15872455200625} is an apocalyptic number.

15872455200625 is the 3984025-th square number.

15872455200625 is the 1992013-rd centered octagonal number.

It is an amenable number.

15872455200625 is a deficient number, since it is larger than the sum of its proper divisors (3961889279798).

15872455200625 is an frugal number, since it uses more digits than its factorization.

15872455200625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318742 (or 159366 counting only the distinct ones).

The product of its (nonzero) digits is 6720000, while the sum is 52.

The spelling of 15872455200625 in words is "fifteen trillion, eight hundred seventy-two billion, four hundred fifty-five million, two hundred thousand, six hundred twenty-five".