3987190272025 has 81 divisors (see below), whose sum is σ = 5249662701751. Its totient is φ = 3003946449280.

The previous prime is 3987190272019. The next prime is 3987190272053. The reversal of 3987190272025 is 5202720917893.

The square root of 3987190272025 is 1996795.

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

It can be written as a sum of positive squares in 13 ways, for example, as 473260067721 + 3513930204304 = 687939^2 + 1874548^2 .

It is not a de Polignac number, because 3987190272025 - 2³ = 3987190272017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 13608157779 + ... + 13608158071.

Almost surely, 2^{3987190272025} is an apocalyptic number.

3987190272025 is the 1996795-th square number.

3987190272025 is the 998398-th centered octagonal number.

It is an amenable number.

3987190272025 is a deficient number, since it is larger than the sum of its proper divisors (1262472429726).

3987190272025 is an frugal number, since it uses more digits than its factorization.

3987190272025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 3987190272025 in words is "three trillion, nine hundred eighty-seven billion, one hundred ninety million, two hundred seventy-two thousand, twenty-five".