25368609 has 32 divisors (see below), whose sum is σ = 41140224. Its totient is φ = 13590720.

The previous prime is 25368601. The next prime is 25368647. The reversal of 25368609 is 90686352.

It is not a de Polignac number, because 25368609 - 2³ = 25368601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25368601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25104 + ... + 26094.

It is an arithmetic number, because the mean of its divisors is an integer number (1285632).

Almost surely, 2^25368609 is an apocalyptic number.

It is an amenable number.

25368609 is a deficient number, since it is larger than the sum of its proper divisors (15771615).

25368609 is a wasteful number, since it uses less digits than its factorization.

25368609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 25368609 is about 5036.7260199459. The cubic root of 25368609 is about 293.8318604509.

The spelling of 25368609 in words is "twenty-five million, three hundred sixty-eight thousand, six hundred nine".