25479577 has 4 divisors (see below), whose sum is σ = 25492176. Its totient is φ = 25466980.

The previous prime is 25479547. The next prime is 25479581. The reversal of 25479577 is 77597452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25479577 - 2⁷ = 25479449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25479527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2503 + ... + 7564.

It is an arithmetic number, because the mean of its divisors is an integer number (6373044).

Almost surely, 2^25479577 is an apocalyptic number.

It is an amenable number.

25479577 is a deficient number, since it is larger than the sum of its proper divisors (12599).

25479577 is a wasteful number, since it uses less digits than its factorization.

25479577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12598.

The product of its digits is 617400, while the sum is 46.

The square root of 25479577 is about 5047.7298858002. The cubic root of 25479577 is about 294.2596661588.

The spelling of 25479577 in words is "twenty-five million, four hundred seventy-nine thousand, five hundred seventy-seven".