25122313 has 4 divisors (see below), whose sum is σ = 26444560. Its totient is φ = 23800068.

The previous prime is 25122283. The next prime is 25122329. The reversal of 25122313 is 31322152.

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 a de Polignac number, because none of the positive numbers 2^k-25122313 is a prime.

It is a super-2 number, since 2×25122313² = 1262261220939938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1322227 = 25122313 / (2 + 5 + 1 + 2 + 2 + 3 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25122343) 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, 661095 + ... + 661132.

It is an arithmetic number, because the mean of its divisors is an integer number (6611140).

Almost surely, 2^25122313 is an apocalyptic number.

It is an amenable number.

25122313 is a deficient number, since it is larger than the sum of its proper divisors (1322247).

25122313 is a wasteful number, since it uses less digits than its factorization.

25122313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322246.

The product of its digits is 360, while the sum is 19.

The square root of 25122313 is about 5012.2163760157. The cubic root of 25122313 is about 292.8778587538.

Adding to 25122313 its reverse (31322152), we get a palindrome (56444465).

The spelling of 25122313 in words is "twenty-five million, one hundred twenty-two thousand, three hundred thirteen".