25313121 has 16 divisors (see below), whose sum is σ = 37699200. Its totient is φ = 16786224.

The previous prime is 25313107. The next prime is 25313129. The reversal of 25313121 is 12131352.

It is not a de Polignac number, because 25313121 - 2⁷ = 25312993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25313094 and 25313103.

It is not an unprimeable number, because it can be changed into a prime (25313129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2940 + ... + 7698.

It is an arithmetic number, because the mean of its divisors is an integer number (2356200).

Almost surely, 2^25313121 is an apocalyptic number.

It is an amenable number.

25313121 is a deficient number, since it is larger than the sum of its proper divisors (12386079).

25313121 is a wasteful number, since it uses less digits than its factorization.

25313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4965 (or 4959 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 25313121 is about 5031.2146644722. The cubic root of 25313121 is about 293.6174741868.

Adding to 25313121 its reverse (12131352), we get a palindrome (37444473).

The spelling of 25313121 in words is "twenty-five million, three hundred thirteen thousand, one hundred twenty-one".