25413131 has 4 divisors (see below), whose sum is σ = 25439232. Its totient is φ = 25387032.

The previous prime is 25413103. The next prime is 25413139. The reversal of 25413131 is 13131452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25413131 is a prime.

It is a super-2 number, since 2×25413131² = 1291654454446322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25413139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11531 + ... + 13556.

It is an arithmetic number, because the mean of its divisors is an integer number (6359808).

Almost surely, 2^25413131 is an apocalyptic number.

25413131 is a deficient number, since it is larger than the sum of its proper divisors (26101).

25413131 is a wasteful number, since it uses less digits than its factorization.

25413131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26100.

The product of its digits is 360, while the sum is 20.

The square root of 25413131 is about 5041.1438186189. The cubic root of 25413131 is about 294.0036519823.

Adding to 25413131 its reverse (13131452), we get a palindrome (38544583).

The spelling of 25413131 in words is "twenty-five million, four hundred thirteen thousand, one hundred thirty-one".