25131426 has 32 divisors (see below), whose sum is σ = 51349248. Its totient is φ = 8198400.

The previous prime is 25131419. The next prime is 25131437. The reversal of 25131426 is 62413152.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25131396 and 25131405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68295 + ... + 68661.

It is an arithmetic number, because the mean of its divisors is an integer number (1604664).

Almost surely, 2^25131426 is an apocalyptic number.

25131426 is an abundant number, since it is smaller than the sum of its proper divisors (26217822).

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

25131426 is a wasteful number, since it uses less digits than its factorization.

25131426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586.

The product of its digits is 1440, while the sum is 24.

The square root of 25131426 is about 5013.1253724598. The cubic root of 25131426 is about 292.9132678245.

Adding to 25131426 its reverse (62413152), we get a palindrome (87544578).

The spelling of 25131426 in words is "twenty-five million, one hundred thirty-one thousand, four hundred twenty-six".