77525 has 12 divisors (see below), whose sum is σ = 110112. Its totient is φ = 53040.

The previous prime is 77521. The next prime is 77527. The reversal of 77525 is 52577.

It is not a de Polignac number, because 77525 - 2² = 77521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77494 and 77503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47 + ... + 396.

It is an arithmetic number, because the mean of its divisors is an integer number (9176).

2⁷⁷⁵²⁵ is an apocalyptic number.

It is an amenable number.

77525 is a deficient number, since it is larger than the sum of its proper divisors (32587).

77525 is a wasteful number, since it uses less digits than its factorization.

77525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 455 counting only the distinct ones).

The product of its digits is 2450, while the sum is 26.

The square root of 77525 is about 278.4331158465. The cubic root of 77525 is about 42.6396788424.

The spelling of 77525 in words is "seventy-seven thousand, five hundred twenty-five".