37899721875625 has 15 divisors (see below), whose sum is σ = 47359684778593. Its totient is φ = 30319654375000.

The previous prime is 37899721875571. The next prime is 37899721875661. The reversal of 37899721875625 is 52657812799873.

The square root of 37899721875625 is 6156275.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2971338195049 + 34928383680576 = 1723757^2 + 5910024^2 .

It is not a de Polignac number, because 37899721875625 - 2²⁵ = 37899688321193 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, 153783750 + ... + 154030000.

Almost surely, 2^{37899721875625} is an apocalyptic number.

37899721875625 is the 6156275-th square number.

37899721875625 is the 3078138-th centered octagonal number.

It is an amenable number.

37899721875625 is a deficient number, since it is larger than the sum of its proper divisors (9459962902968).

37899721875625 is an frugal number, since it uses more digits than its factorization.

37899721875625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492522 (or 246256 counting only the distinct ones).

The product of its digits is 3200601600, while the sum is 79.

The spelling of 37899721875625 in words is "thirty-seven trillion, eight hundred ninety-nine billion, seven hundred twenty-one million, eight hundred seventy-five thousand, six hundred twenty-five".