25500028 has 12 divisors (see below), whose sum is σ = 44860032. Its totient is φ = 12682880.

The previous prime is 25500023. The next prime is 25500043. The reversal of 25500028 is 82000552.

It is a junction number, because it is equal to n+sod(n) for n = 25499981 and 25500008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25500023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15925 + ... + 17452.

It is an arithmetic number, because the mean of its divisors is an integer number (3738336).

Almost surely, 2^25500028 is an apocalyptic number.

It is an amenable number.

25500028 is a deficient number, since it is larger than the sum of its proper divisors (19360004).

25500028 is a wasteful number, since it uses less digits than its factorization.

25500028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33572 (or 33570 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 25500028 is about 5049.7552415934. The cubic root of 25500028 is about 294.3383735758.

The spelling of 25500028 in words is "twenty-five million, five hundred thousand, twenty-eight".