25428136 has 32 divisors (see below), whose sum is σ = 49167360. Its totient is φ = 12321792.

The previous prime is 25428097. The next prime is 25428167. The reversal of 25428136 is 63182452.

It is a junction number, because it is equal to n+sod(n) for n = 25428098 and 25428107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66201 + ... + 66583.

It is an arithmetic number, because the mean of its divisors is an integer number (1536480).

Almost surely, 2^25428136 is an apocalyptic number.

It is an amenable number.

25428136 is a deficient number, since it is larger than the sum of its proper divisors (23739224).

25428136 is a wasteful number, since it uses less digits than its factorization.

25428136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 621 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 25428136 is about 5042.6318525151. The cubic root of 25428136 is about 294.0615047099.

The spelling of 25428136 in words is "twenty-five million, four hundred twenty-eight thousand, one hundred thirty-six".