77275425 has 24 divisors (see below), whose sum is σ = 131219776. Its totient is φ = 40098240.

The previous prime is 77275411. The next prime is 77275453. The reversal of 77275425 is 52457277.

It is not a de Polignac number, because 77275425 - 2¹³ = 77267233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11149 + ... + 16698.

Almost surely, 2^77275425 is an apocalyptic number.

77275425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77275425 is a deficient number, since it is larger than the sum of its proper divisors (53944351).

77275425 is a wasteful number, since it uses less digits than its factorization.

77275425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27897 (or 27892 counting only the distinct ones).

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

The square root of 77275425 is about 8790.6441743481. The cubic root of 77275425 is about 425.9387323998.

The spelling of 77275425 in words is "seventy-seven million, two hundred seventy-five thousand, four hundred twenty-five".