25045231 has 4 divisors (see below), whose sum is σ = 25062912. Its totient is φ = 25027552.

The previous prime is 25045213. The next prime is 25045243. The reversal of 25045231 is 13254052.

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

It is a cyclic number.

It is not a de Polignac number, because 25045231 - 2⁷ = 25045103 is a prime.

It is a super-2 number, since 2×25045231² = 1254527191686722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25045331) 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, 6511 + ... + 9616.

It is an arithmetic number, because the mean of its divisors is an integer number (6265728).

Almost surely, 2^25045231 is an apocalyptic number.

25045231 is a deficient number, since it is larger than the sum of its proper divisors (17681).

25045231 is a wasteful number, since it uses less digits than its factorization.

25045231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17680.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25045231 is about 5004.5210560053. The cubic root of 25045231 is about 292.5780092417.

Adding to 25045231 its reverse (13254052), we get a palindrome (38299283).

The spelling of 25045231 in words is "twenty-five million, forty-five thousand, two hundred thirty-one".