25422725 has 6 divisors (see below), whose sum is σ = 31524210. Its totient is φ = 20338160.

The previous prime is 25422713. The next prime is 25422743. The reversal of 25422725 is 52722452.

It can be written as a sum of positive squares in 3 ways, for example, as 961 + 25421764 = 31^2 + 5042^2 .

It is not a de Polignac number, because 25422725 - 2²² = 21228421 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 508430 + ... + 508479.

It is an arithmetic number, because the mean of its divisors is an integer number (5254035).

Almost surely, 2^25422725 is an apocalyptic number.

25422725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25422725 is a deficient number, since it is larger than the sum of its proper divisors (6101485).

25422725 is a wasteful number, since it uses less digits than its factorization.

25422725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016919 (or 1016914 counting only the distinct ones).

The product of its digits is 11200, while the sum is 29.

The square root of 25422725 is about 5042.0952985837. The cubic root of 25422725 is about 294.0406448812.

The spelling of 25422725 in words is "twenty-five million, four hundred twenty-two thousand, seven hundred twenty-five".