977122365025 has 9 divisors (see below), whose sum is σ = 1211637861331. Its totient is φ = 781693938040.

The previous prime is 977122365019. The next prime is 977122365031. The reversal of 977122365025 is 520563221779.

The square root of 977122365025 is 988495.

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

It is an interprime number because it is at equal distance from previous prime (977122365019) and next prime (977122365031).

It can be written as a sum of positive squares in only one way, i.e., 351764051409 + 625358313616 = 593097^2 + 790796^2 .

It is not a de Polignac number, because 977122365025 - 2³ = 977122365017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 977122365025.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4843626 + ... + 5041324.

Almost surely, 2^977122365025 is an apocalyptic number.

977122365025 is the 988495-th square number.

977122365025 is the 494248-th centered octagonal number.

It is an amenable number.

977122365025 is a deficient number, since it is larger than the sum of its proper divisors (234515496306).

977122365025 is an frugal number, since it uses more digits than its factorization.

977122365025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395408 (or 197704 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 49.

Multiplying 977122365025 by its sum of digits (49), we get a square (47878995886225 = 6919465²).

The spelling of 977122365025 in words is "nine hundred seventy-seven billion, one hundred twenty-two million, three hundred sixty-five thousand, twenty-five".