25390539 has 12 divisors (see below), whose sum is σ = 36734256. Its totient is φ = 16899792.

The previous prime is 25390531. The next prime is 25390549. The reversal of 25390539 is 93509352.

It is not a de Polignac number, because 25390539 - 2³ = 25390531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25390531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4789 + ... + 8585.

It is an arithmetic number, because the mean of its divisors is an integer number (3061188).

Almost surely, 2^25390539 is an apocalyptic number.

25390539 is a deficient number, since it is larger than the sum of its proper divisors (11343717).

25390539 is a wasteful number, since it uses less digits than its factorization.

25390539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546 (or 4543 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 36.

The square root of 25390539 is about 5038.9025590896. The cubic root of 25390539 is about 293.9165041251.

The spelling of 25390539 in words is "twenty-five million, three hundred ninety thousand, five hundred thirty-nine".