25151428 has 12 divisors (see below), whose sum is σ = 44157820. Its totient is φ = 12534912.

The previous prime is 25151417. The next prime is 25151437. The reversal of 25151428 is 82415152.

It can be written as a sum of positive squares in 2 ways, for example, as 1258884 + 23892544 = 1122^2 + 4888^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25151396 and 25151405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8793 + ... + 11296.

Almost surely, 2^25151428 is an apocalyptic number.

It is an amenable number.

25151428 is a deficient number, since it is larger than the sum of its proper divisors (19006392).

25151428 is a wasteful number, since it uses less digits than its factorization.

25151428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20406 (or 20404 counting only the distinct ones).

The product of its digits is 3200, while the sum is 28.

The square root of 25151428 is about 5015.1199387452. The cubic root of 25151428 is about 292.9909567113.

The spelling of 25151428 in words is "twenty-five million, one hundred fifty-one thousand, four hundred twenty-eight".