25651131 has 16 divisors (see below), whose sum is σ = 37555968. Its totient is φ = 15444000.

The previous prime is 25651127. The next prime is 25651133. The reversal of 25651131 is 13115652.

It is not a de Polignac number, because 25651131 - 2² = 25651127 is a prime.

It is a super-2 number, since 2×25651131² = 1315961043158322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25651133) 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, 2706 + ... + 7656.

It is an arithmetic number, because the mean of its divisors is an integer number (2347248).

Almost surely, 2^25651131 is an apocalyptic number.

25651131 is a deficient number, since it is larger than the sum of its proper divisors (11904837).

25651131 is a wasteful number, since it uses less digits than its factorization.

25651131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122.

The product of its digits is 900, while the sum is 24.

The square root of 25651131 is about 5064.6945613729. The cubic root of 25651131 is about 294.9186062912.

Adding to 25651131 its reverse (13115652), we get a palindrome (38766783).

It can be divided in two parts, 25 and 651131, that added together give a palindrome (651156).

The spelling of 25651131 in words is "twenty-five million, six hundred fifty-one thousand, one hundred thirty-one".