25479575 has 18 divisors (see below), whose sum is σ = 34732152. Its totient is φ = 18528400.

The previous prime is 25479547. The next prime is 25479581. The reversal of 25479575 is 57597452.

It is not a de Polignac number, because 25479575 - 2¹⁸ = 25217431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1187 + ... + 7236.

It is an arithmetic number, because the mean of its divisors is an integer number (1929564).

Almost surely, 2^25479575 is an apocalyptic number.

25479575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25479575 is a deficient number, since it is larger than the sum of its proper divisors (9252577).

25479575 is a wasteful number, since it uses less digits than its factorization.

25479575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8455 (or 8439 counting only the distinct ones).

The product of its digits is 441000, while the sum is 44.

The square root of 25479575 is about 5047.7296876913. The cubic root of 25479575 is about 294.2596584596.

The spelling of 25479575 in words is "twenty-five million, four hundred seventy-nine thousand, five hundred seventy-five".