25604417 has 4 divisors (see below), whose sum is σ = 25664256. Its totient is φ = 25544580.

The previous prime is 25604399. The next prime is 25604437. The reversal of 25604417 is 71440652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25604417 - 2¹² = 25600321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25604417.

It is not an unprimeable number, because it can be changed into a prime (25604437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29273 + ... + 30134.

It is an arithmetic number, because the mean of its divisors is an integer number (6416064).

Almost surely, 2^25604417 is an apocalyptic number.

It is an amenable number.

25604417 is a deficient number, since it is larger than the sum of its proper divisors (59839).

25604417 is an equidigital number, since it uses as much as digits as its factorization.

25604417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59838.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 25604417 is about 5060.0807305813. The cubic root of 25604417 is about 294.7394692989.

The spelling of 25604417 in words is "twenty-five million, six hundred four thousand, four hundred seventeen".