25760779 has 12 divisors (see below), whose sum is σ = 28477960. Its totient is φ = 23284800.

The previous prime is 25760773. The next prime is 25760837. The reversal of 25760779 is 97706752.

It is a happy number.

It is not a de Polignac number, because 25760779 - 2²³ = 17372171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25760773) 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, 25027 + ... + 26035.

Almost surely, 2^25760779 is an apocalyptic number.

25760779 is a deficient number, since it is larger than the sum of its proper divisors (2717181).

25760779 is a wasteful number, since it uses less digits than its factorization.

25760779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 25760779 is about 5075.5077578504. The cubic root of 25760779 is about 295.3382274031.

The spelling of 25760779 in words is "twenty-five million, seven hundred sixty thousand, seven hundred seventy-nine".