77696025 has 48 divisors (see below), whose sum is σ = 143615808. Its totient is φ = 36736000.

The previous prime is 77696009. The next prime is 77696033. The reversal of 77696025 is 52069677.

It is a happy number.

It is not a de Polignac number, because 77696025 - 2⁴ = 77696009 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32677 + ... + 34973.

It is an arithmetic number, because the mean of its divisors is an integer number (2991996).

Almost surely, 2^77696025 is an apocalyptic number.

77696025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77696025 is a deficient number, since it is larger than the sum of its proper divisors (65919783).

77696025 is a wasteful number, since it uses less digits than its factorization.

77696025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 77696025 is about 8814.5348714495. The cubic root of 77696025 is about 426.7101107971.

The spelling of 77696025 in words is "seventy-seven million, six hundred ninety-six thousand, twenty-five".