77240425 has 12 divisors (see below), whose sum is σ = 95914000. Its totient is φ = 61704720.

The previous prime is 77240419. The next prime is 77240431. The reversal of 77240425 is 52404277.

It is an interprime number because it is at equal distance from previous prime (77240419) and next prime (77240431).

It is not a de Polignac number, because 77240425 - 2⁵ = 77240393 is a prime.

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, 20326 + ... + 23824.

Almost surely, 2^77240425 is an apocalyptic number.

It is an amenable number.

77240425 is a deficient number, since it is larger than the sum of its proper divisors (18673575).

77240425 is a wasteful number, since it uses less digits than its factorization.

77240425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392 (or 4387 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 77240425 is about 8788.6531960250. The cubic root of 77240425 is about 425.8744165370.

The spelling of 77240425 in words is "seventy-seven million, two hundred forty thousand, four hundred twenty-five".