25804413 has 44 divisors (see below), whose sum is σ = 42515040. Its totient is φ = 15588936.

The previous prime is 25804411. The next prime is 25804421. The reversal of 25804413 is 31440852.

It is not a de Polignac number, because 25804413 - 2¹ = 25804411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25804411) by changing a digit.

It is a polite number, since it can be written in 43 ways as a sum of consecutive naturals, for example, 1121920 + ... + 1121942.

Almost surely, 2^25804413 is an apocalyptic number.

25804413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25804413 is a deficient number, since it is larger than the sum of its proper divisors (16710627).

25804413 is an frugal number, since it uses more digits than its factorization.

25804413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 25804413 is about 5079.8044253691. The cubic root of 25804413 is about 295.5048828073.

The spelling of 25804413 in words is "twenty-five million, eight hundred four thousand, four hundred thirteen".