25231745 has 16 divisors (see below), whose sum is σ = 37749888. Its totient is φ = 15728640.

The previous prime is 25231733. The next prime is 25231747. The reversal of 25231745 is 54713252.

It is a happy number.

25231745 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 25231745 - 2⁴ = 25231729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25231747) 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, 32384 + ... + 33153.

It is an arithmetic number, because the mean of its divisors is an integer number (2359368).

Almost surely, 2^25231745 is an apocalyptic number.

It is an amenable number.

25231745 is a deficient number, since it is larger than the sum of its proper divisors (12518143).

25231745 is a wasteful number, since it uses less digits than its factorization.

25231745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65560.

The product of its digits is 8400, while the sum is 29.

The square root of 25231745 is about 5023.1210417429. The cubic root of 25231745 is about 293.3024983370.

Adding to 25231745 its reverse (54713252), we get a palindrome (79944997).

The spelling of 25231745 in words is "twenty-five million, two hundred thirty-one thousand, seven hundred forty-five".