25056779 has 4 divisors (see below), whose sum is σ = 27334680. Its totient is φ = 22778880.

The previous prime is 25056761. The next prime is 25056791. The reversal of 25056779 is 97765052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25056779 - 2¹² = 25052683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25056679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138934 + ... + 1138955.

It is an arithmetic number, because the mean of its divisors is an integer number (6833670).

Almost surely, 2^25056779 is an apocalyptic number.

25056779 is a deficient number, since it is larger than the sum of its proper divisors (2277901).

25056779 is a wasteful number, since it uses less digits than its factorization.

25056779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277900.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 25056779 is about 5005.6746798009. The cubic root of 25056779 is about 292.6229701858.

The spelling of 25056779 in words is "twenty-five million, fifty-six thousand, seven hundred seventy-nine".