25397922 has 16 divisors (see below), whose sum is σ = 55413792. Its totient is φ = 7696320.

The previous prime is 25397921. The next prime is 25397923. The reversal of 25397922 is 22979352.

It is an interprime number because it is at equal distance from previous prime (25397921) and next prime (25397923).

It is not an unprimeable number, because it can be changed into a prime (25397921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192343 + ... + 192474.

It is an arithmetic number, because the mean of its divisors is an integer number (3463362).

Almost surely, 2^25397922 is an apocalyptic number.

25397922 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25397922 is an abundant number, since it is smaller than the sum of its proper divisors (30015870).

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

25397922 is a wasteful number, since it uses less digits than its factorization.

25397922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384833.

The product of its digits is 68040, while the sum is 39.

The square root of 25397922 is about 5039.6351058385. The cubic root of 25397922 is about 293.9449894762.

The spelling of 25397922 in words is "twenty-five million, three hundred ninety-seven thousand, nine hundred twenty-two".