25522506 has 16 divisors (see below), whose sum is σ = 56716800. Its totient is φ = 8507484.

The previous prime is 25522501. The next prime is 25522531. The reversal of 25522506 is 60522552.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 25522506.

It is not an unprimeable number, because it can be changed into a prime (25522501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236266 + ... + 236373.

It is an arithmetic number, because the mean of its divisors is an integer number (3544800).

Almost surely, 2^25522506 is an apocalyptic number.

25522506 is an abundant number, since it is smaller than the sum of its proper divisors (31194294).

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

25522506 is a wasteful number, since it uses less digits than its factorization.

25522506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472650 (or 472644 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 25522506 is about 5051.9804037625. The cubic root of 25522506 is about 294.4248335448.

The spelling of 25522506 in words is "twenty-five million, five hundred twenty-two thousand, five hundred six".