25971426 has 24 divisors (see below), whose sum is σ = 60600540. Its totient is φ = 7991136.

The previous prime is 25971419. The next prime is 25971457. The reversal of 25971426 is 62417952.

It can be written as a sum of positive squares in 2 ways, for example, as 25250625 + 720801 = 5025^2 + 849^2 .

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 55261 + ... + 55728.

Almost surely, 2^25971426 is an apocalyptic number.

25971426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25971426 is an abundant number, since it is smaller than the sum of its proper divisors (34629114).

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

25971426 is a wasteful number, since it uses less digits than its factorization.

25971426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111010 (or 111007 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 25971426 is about 5096.2168321216. The cubic root of 25971426 is about 296.1410409537.

The spelling of 25971426 in words is "twenty-five million, nine hundred seventy-one thousand, four hundred twenty-six".