77265725 has 12 divisors (see below), whose sum is σ = 95919456. Its totient is φ = 61741680.

The previous prime is 77265719. The next prime is 77265739. The reversal of 77265725 is 52756277.

It is not a de Polignac number, because 77265725 - 2¹⁸ = 77003581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37574 + ... + 39576.

It is an arithmetic number, because the mean of its divisors is an integer number (7993288).

Almost surely, 2^77265725 is an apocalyptic number.

It is an amenable number.

77265725 is a deficient number, since it is larger than the sum of its proper divisors (18653731).

77265725 is a wasteful number, since it uses less digits than its factorization.

77265725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556 (or 3551 counting only the distinct ones).

The product of its digits is 205800, while the sum is 41.

The square root of 77265725 is about 8790.0924340987. The cubic root of 77265725 is about 425.9209096634.

The spelling of 77265725 in words is "seventy-seven million, two hundred sixty-five thousand, seven hundred twenty-five".