25641253 has 8 divisors (see below), whose sum is σ = 29617920. Its totient is φ = 21938880.

The previous prime is 25641233. The next prime is 25641293. The reversal of 25641253 is 35214652.

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 25641253 - 2⁵ = 25641221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25641233) 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, 68373 + ... + 68746.

It is an arithmetic number, because the mean of its divisors is an integer number (3702240).

Almost surely, 2^25641253 is an apocalyptic number.

It is an amenable number.

25641253 is a deficient number, since it is larger than the sum of its proper divisors (3976667).

25641253 is a wasteful number, since it uses less digits than its factorization.

25641253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137147.

The product of its digits is 7200, while the sum is 28.

The square root of 25641253 is about 5063.7192852685. The cubic root of 25641253 is about 294.8807446725.

It can be divided in two parts, 25 and 641253, that added together give a triangular number (641278 = T₁₁₃₂).

The spelling of 25641253 in words is "twenty-five million, six hundred forty-one thousand, two hundred fifty-three".