77430925 has 48 divisors (see below), whose sum is σ = 114367680. Its totient is φ = 51691200.

The previous prime is 77430911. The next prime is 77430931. The reversal of 77430925 is 52903477.

It is not a de Polignac number, because 77430925 - 2⁷ = 77430797 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 432486 + ... + 432664.

It is an arithmetic number, because the mean of its divisors is an integer number (2382660).

Almost surely, 2^77430925 is an apocalyptic number.

It is an amenable number.

77430925 is a deficient number, since it is larger than the sum of its proper divisors (36936755).

77430925 is a wasteful number, since it uses less digits than its factorization.

77430925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 77430925 is about 8799.4843598929. The cubic root of 77430925 is about 426.2242440213.

The spelling of 77430925 in words is "seventy-seven million, four hundred thirty thousand, nine hundred twenty-five".