977656225 has 48 divisors (see below), whose sum is σ = 1505653632. Its totient is φ = 613186560.

The previous prime is 977656219. The next prime is 977656237. The reversal of 977656225 is 522656779.

977656225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 977656225 - 2⁹ = 977655713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 255174 + ... + 258976.

It is an arithmetic number, because the mean of its divisors is an integer number (31367784).

Almost surely, 2^977656225 is an apocalyptic number.

It is an amenable number.

977656225 is a deficient number, since it is larger than the sum of its proper divisors (527997407).

977656225 is a wasteful number, since it uses less digits than its factorization.

977656225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946 (or 3941 counting only the distinct ones).

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

The square root of 977656225 is about 31267.4947029659. The cubic root of 977656225 is about 992.4959044048.

The spelling of 977656225 in words is "nine hundred seventy-seven million, six hundred fifty-six thousand, two hundred twenty-five".