25431113 has 4 divisors (see below), whose sum is σ = 25465728. Its totient is φ = 25396500.

The previous prime is 25431073. The next prime is 25431151. The reversal of 25431113 is 31113452.

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 not a de Polignac number, because 25431113 - 2⁸ = 25430857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25431163) 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, 16181 + ... + 17682.

It is an arithmetic number, because the mean of its divisors is an integer number (6366432).

Almost surely, 2^25431113 is an apocalyptic number.

It is an amenable number.

25431113 is a deficient number, since it is larger than the sum of its proper divisors (34615).

25431113 is an equidigital number, since it uses as much as digits as its factorization.

25431113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34614.

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

The square root of 25431113 is about 5042.9270270350. The cubic root of 25431113 is about 294.0729800161.

Adding to 25431113 its reverse (31113452), we get a palindrome (56544565).

The spelling of 25431113 in words is "twenty-five million, four hundred thirty-one thousand, one hundred thirteen".