25231161 has 8 divisors (see below), whose sum is σ = 35104320. Its totient is φ = 16089392.

The previous prime is 25231147. The next prime is 25231163. The reversal of 25231161 is 16113252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25231161 - 2⁶ = 25231097 is a prime.

It is a super-2 number, since 2×25231161² = 1273222970815842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25231163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182766 + ... + 182903.

It is an arithmetic number, because the mean of its divisors is an integer number (4388040).

Almost surely, 2^25231161 is an apocalyptic number.

It is an amenable number.

25231161 is a deficient number, since it is larger than the sum of its proper divisors (9873159).

25231161 is a wasteful number, since it uses less digits than its factorization.

25231161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365695.

The product of its digits is 360, while the sum is 21.

The square root of 25231161 is about 5023.0629102172. The cubic root of 25231161 is about 293.3002354472.

It can be divided in two parts, 252 and 31161, that added together give a palindrome (31413).

The spelling of 25231161 in words is "twenty-five million, two hundred thirty-one thousand, one hundred sixty-one".