25772979 has 8 divisors (see below), whose sum is σ = 35292880. Its totient is φ = 16717536.

The previous prime is 25772951. The next prime is 25772993. The reversal of 25772979 is 97927752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25772979 - 2¹¹ = 25770931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25702979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115984 + ... + 116205.

It is an arithmetic number, because the mean of its divisors is an integer number (4411610).

Almost surely, 2^25772979 is an apocalyptic number.

25772979 is a deficient number, since it is larger than the sum of its proper divisors (9519901).

25772979 is a wasteful number, since it uses less digits than its factorization.

25772979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232229.

The product of its digits is 555660, while the sum is 48.

The square root of 25772979 is about 5076.7094657859. The cubic root of 25772979 is about 295.3848429412.

The spelling of 25772979 in words is "twenty-five million, seven hundred seventy-two thousand, nine hundred seventy-nine".