25400253 has 16 divisors (see below), whose sum is σ = 35283456. Its totient is φ = 16235520.

The previous prime is 25400251. The next prime is 25400269. The reversal of 25400253 is 35200452.

It is not a de Polignac number, because 25400253 - 2¹ = 25400251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25400251) 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, 9301 + ... + 11717.

It is an arithmetic number, because the mean of its divisors is an integer number (2205216).

Almost surely, 2^25400253 is an apocalyptic number.

It is an amenable number.

25400253 is a deficient number, since it is larger than the sum of its proper divisors (9883203).

25400253 is a wasteful number, since it uses less digits than its factorization.

25400253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 25400253 is about 5039.8663672760. The cubic root of 25400253 is about 293.9539818760.

The spelling of 25400253 in words is "twenty-five million, four hundred thousand, two hundred fifty-three".