25228313 has 4 divisors (see below), whose sum is σ = 27521808. Its totient is φ = 22934820.

The previous prime is 25228303. The next prime is 25228321. The reversal of 25228313 is 31382252.

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 25228313 - 2⁴ = 25228297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25228303) 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, 1146731 + ... + 1146752.

It is an arithmetic number, because the mean of its divisors is an integer number (6880452).

Almost surely, 2^25228313 is an apocalyptic number.

It is an amenable number.

25228313 is a deficient number, since it is larger than the sum of its proper divisors (2293495).

25228313 is a wasteful number, since it uses less digits than its factorization.

25228313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293494.

The product of its digits is 2880, while the sum is 26.

The square root of 25228313 is about 5022.7794098487. The cubic root of 25228313 is about 293.2891994839.

The spelling of 25228313 in words is "twenty-five million, two hundred twenty-eight thousand, three hundred thirteen".