25235131 has 4 divisors (see below), whose sum is σ = 25850664. Its totient is φ = 24619600.

The previous prime is 25235129. The next prime is 25235141. The reversal of 25235131 is 13153252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25235131 - 2¹ = 25235129 is a prime.

It is a super-2 number, since 2×25235131² = 1273623673174322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25235101) 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, 307705 + ... + 307786.

It is an arithmetic number, because the mean of its divisors is an integer number (6462666).

Almost surely, 2^25235131 is an apocalyptic number.

25235131 is a deficient number, since it is larger than the sum of its proper divisors (615533).

25235131 is an equidigital number, since it uses as much as digits as its factorization.

25235131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615532.

The product of its digits is 900, while the sum is 22.

The square root of 25235131 is about 5023.4580718863. The cubic root of 25235131 is about 293.3156177605.

Adding to 25235131 its reverse (13153252), we get a palindrome (38388383).

The spelling of 25235131 in words is "twenty-five million, two hundred thirty-five thousand, one hundred thirty-one".