77572425 has 48 divisors (see below), whose sum is σ = 147768320. Its totient is φ = 35173440.

The previous prime is 77572379. The next prime is 77572427. The reversal of 77572425 is 52427577.

It is not a de Polignac number, because 77572425 - 2¹⁰ = 77571401 is a prime.

It is a super-2 number, since 2×77572425² = 12034962240761250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77572427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72444 + ... + 73506.

Almost surely, 2^77572425 is an apocalyptic number.

77572425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77572425 is a deficient number, since it is larger than the sum of its proper divisors (70195895).

77572425 is a wasteful number, since it uses less digits than its factorization.

77572425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1217 counting only the distinct ones).

The product of its digits is 137200, while the sum is 39.

The square root of 77572425 is about 8807.5209338383. The cubic root of 77572425 is about 426.4837184272.

The spelling of 77572425 in words is "seventy-seven million, five hundred seventy-two thousand, four hundred twenty-five".