25525556 has 24 divisors (see below), whose sum is σ = 51629760. Its totient is φ = 10815552.

The previous prime is 25525553. The next prime is 25525589. The reversal of 25525556 is 65552552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525553) by changing a digit.

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, 2630 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (2151240).

Almost surely, 2^25525556 is an apocalyptic number.

It is an amenable number.

25525556 is an abundant number, since it is smaller than the sum of its proper divisors (26104204).

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

25525556 is a wasteful number, since it uses less digits than its factorization.

25525556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343 (or 10341 counting only the distinct ones).

The product of its digits is 75000, while the sum is 35.

The square root of 25525556 is about 5052.2822565648. The cubic root of 25525556 is about 294.4365612330.

The spelling of 25525556 in words is "twenty-five million, five hundred twenty-five thousand, five hundred fifty-six".