25426138 has 12 divisors (see below), whose sum is σ = 39412170. Its totient is φ = 12302040.

The previous prime is 25426129. The next prime is 25426139. The reversal of 25426138 is 83162452.

It can be written as a sum of positive squares in only one way, i.e., 13155129 + 12271009 = 3627^2 + 3503^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

25426138 is a modest number, since divided by 6138 gives 2542 as remainder.

It is not an unprimeable number, because it can be changed into a prime (25426139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4693 + ... + 8536.

Almost surely, 2^25426138 is an apocalyptic number.

25426138 is a deficient number, since it is larger than the sum of its proper divisors (13986032).

25426138 is a wasteful number, since it uses less digits than its factorization.

25426138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13293 (or 13262 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 25426138 is about 5042.4337377897. The cubic root of 25426138 is about 294.0538026081.

The spelling of 25426138 in words is "twenty-five million, four hundred twenty-six thousand, one hundred thirty-eight".