977500225 has 45 divisors (see below), whose sum is σ = 1349553597. Its totient is φ = 702336960.

The previous prime is 977500217. The next prime is 977500231. The reversal of 977500225 is 522005779.

The square root of 977500225 is 31265.

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

It can be written as a sum of positive squares in 22 ways, for example, as 778577409 + 198922816 = 27903^2 + 14104^2 .

It is not a de Polignac number, because 977500225 - 2³ = 977500217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 26418907 + ... + 26418943.

Almost surely, 2^977500225 is an apocalyptic number.

977500225 is the 31265-th square number.

977500225 is the 15633-rd centered octagonal number.

It is an amenable number.

977500225 is a deficient number, since it is larger than the sum of its proper divisors (372053372).

977500225 is an frugal number, since it uses more digits than its factorization.

977500225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The cubic root of 977500225 is about 992.4431122975.

Multiplying 977500225 by its product of nonzero digits (44100), we get a square (43107759922500 = 6565650²).

The spelling of 977500225 in words is "nine hundred seventy-seven million, five hundred thousand, two hundred twenty-five".