77264725 has 12 divisors (see below), whose sum is σ = 97617636. Its totient is φ = 60644480.

The previous prime is 77264699. The next prime is 77264731. The reversal of 77264725 is 52746277.

It can be written as a sum of positive squares in 6 ways, for example, as 544644 + 76720081 = 738^2 + 8759^2 .

It is not a de Polignac number, because 77264725 - 2⁷ = 77264597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27832 + ... + 30481.

It is an arithmetic number, because the mean of its divisors is an integer number (8134803).

Almost surely, 2^77264725 is an apocalyptic number.

It is an amenable number.

77264725 is a deficient number, since it is larger than the sum of its proper divisors (20352911).

77264725 is a wasteful number, since it uses less digits than its factorization.

77264725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58376 (or 58371 counting only the distinct ones).

The product of its digits is 164640, while the sum is 40.

The square root of 77264725 is about 8790.0355516915. The cubic root of 77264725 is about 425.9190721831.

The spelling of 77264725 in words is "seventy-seven million, two hundred sixty-four thousand, seven hundred twenty-five".