25520028 has 24 divisors (see below), whose sum is σ = 59834880. Its totient is φ = 8465520.

The previous prime is 25520017. The next prime is 25520051. The reversal of 25520028 is 82002552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2508 + ... + 7571.

It is an arithmetic number, because the mean of its divisors is an integer number (2493120).

Almost surely, 2^25520028 is an apocalyptic number.

It is an amenable number.

25520028 is an abundant number, since it is smaller than the sum of its proper divisors (34314852).

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

25520028 is a wasteful number, since it uses less digits than its factorization.

25520028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297 (or 10295 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 25520028 is about 5051.7351474518. The cubic root of 25520028 is about 294.4153045909.

The spelling of 25520028 in words is "twenty-five million, five hundred twenty thousand, twenty-eight".