25972579 has 4 divisors (see below), whose sum is σ = 25991280. Its totient is φ = 25953880.

The previous prime is 25972571. The next prime is 25972607. The reversal of 25972579 is 97527952.

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 25972579 - 2³ = 25972571 is a prime.

It is a super-2 number, since 2×25972579² = 1349149719822482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25972571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7084 + ... + 10105.

It is an arithmetic number, because the mean of its divisors is an integer number (6497820).

Almost surely, 2^25972579 is an apocalyptic number.

25972579 is a deficient number, since it is larger than the sum of its proper divisors (18701).

25972579 is a wasteful number, since it uses less digits than its factorization.

25972579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18700.

The product of its digits is 396900, while the sum is 46.

The square root of 25972579 is about 5096.3299539963. The cubic root of 25972579 is about 296.1454232772.

The spelling of 25972579 in words is "twenty-five million, nine hundred seventy-two thousand, five hundred seventy-nine".