25313409 has 24 divisors (see below), whose sum is σ = 41625792. Its totient is φ = 14673120.

The previous prime is 25313371. The next prime is 25313437. The reversal of 25313409 is 90431352.

25313409 is a `hidden beast` number, since 253 + 1 + 3 + 409 = 666.

It is not a de Polignac number, because 25313409 - 2⁹ = 25312897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25313009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3282 + ... + 7835.

It is an arithmetic number, because the mean of its divisors is an integer number (1734408).

Almost surely, 2^25313409 is an apocalyptic number.

It is an amenable number.

25313409 is a deficient number, since it is larger than the sum of its proper divisors (16312383).

25313409 is a wasteful number, since it uses less digits than its factorization.

25313409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11157 (or 11154 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 25313409 is about 5031.2432857098. The cubic root of 25313409 is about 293.6185877268.

The spelling of 25313409 in words is "twenty-five million, three hundred thirteen thousand, four hundred nine".