25198422 has 16 divisors (see below), whose sum is σ = 50473920. Its totient is φ = 8386632.

The previous prime is 25198417. The next prime is 25198423. The reversal of 25198422 is 22489152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25198423) 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, 1593 + ... + 7275.

It is an arithmetic number, because the mean of its divisors is an integer number (3154620).

Almost surely, 2^25198422 is an apocalyptic number.

25198422 is an abundant number, since it is smaller than the sum of its proper divisors (25275498).

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

25198422 is a wasteful number, since it uses less digits than its factorization.

25198422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427.

The product of its digits is 11520, while the sum is 33.

The square root of 25198422 is about 5019.8029841817. The cubic root of 25198422 is about 293.1733221088.

The spelling of 25198422 in words is "twenty-five million, one hundred ninety-eight thousand, four hundred twenty-two".