25398426 has 8 divisors (see below), whose sum is σ = 50796864. Its totient is φ = 8466140.

The previous prime is 25398419. The next prime is 25398467. The reversal of 25398426 is 62489352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

25398426 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116530 + ... + 2116541.

It is an arithmetic number, because the mean of its divisors is an integer number (6349608).

Almost surely, 2^25398426 is an apocalyptic number.

25398426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25398426 is a wasteful number, since it uses less digits than its factorization.

25398426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233076.

The product of its digits is 103680, while the sum is 39.

The square root of 25398426 is about 5039.6851092107. The cubic root of 25398426 is about 293.9469338255.

The spelling of 25398426 in words is "twenty-five million, three hundred ninety-eight thousand, four hundred twenty-six".