77604425 has 24 divisors (see below), whose sum is σ = 98806176. Its totient is φ = 60445440.

The previous prime is 77604421. The next prime is 77604427. The reversal of 77604425 is 52440677.

It is not a de Polignac number, because 77604425 - 2² = 77604421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77604421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179009 + ... + 179441.

It is an arithmetic number, because the mean of its divisors is an integer number (4116924).

Almost surely, 2^77604425 is an apocalyptic number.

It is an amenable number.

77604425 is a deficient number, since it is larger than the sum of its proper divisors (21201751).

77604425 is a wasteful number, since it uses less digits than its factorization.

77604425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 77604425 is about 8809.3373757622. The cubic root of 77604425 is about 426.5423543957.

The spelling of 77604425 in words is "seventy-seven million, six hundred four thousand, four hundred twenty-five".