25650128 has 30 divisors (see below), whose sum is σ = 57812706. Its totient is φ = 10992576.

The previous prime is 25650101. The next prime is 25650137. The reversal of 25650128 is 82105652.

It can be written as a sum of positive squares in only one way, i.e., 25120144 + 529984 = 5012^2 + 728^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25650128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15575 + ... + 17142.

Almost surely, 2^25650128 is an apocalyptic number.

25650128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25650128 is an abundant number, since it is smaller than the sum of its proper divisors (32162578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25650128 is a wasteful number, since it uses less digits than its factorization.

25650128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32739 (or 32726 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 25650128 is about 5064.5955416005. The cubic root of 25650128 is about 294.9147623123.

The spelling of 25650128 in words is "twenty-five million, six hundred fifty thousand, one hundred twenty-eight".