25996401 has 6 divisors (see below), whose sum is σ = 37550370. Its totient is φ = 17330928.

The previous prime is 25996393. The next prime is 25996423. The reversal of 25996401 is 10469952.

25996401 is a `hidden beast` number, since 2 + 5 + 9 + 9 + 640 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22810176 + 3186225 = 4776^2 + 1785^2 .

It is not a de Polignac number, because 25996401 - 2³ = 25996393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25996471) 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, 1444236 + ... + 1444253.

It is an arithmetic number, because the mean of its divisors is an integer number (6258395).

Almost surely, 2^25996401 is an apocalyptic number.

It is an amenable number.

25996401 is a deficient number, since it is larger than the sum of its proper divisors (11553969).

25996401 is a wasteful number, since it uses less digits than its factorization.

25996401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888495 (or 2888492 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 25996401 is about 5098.6665903940. Note that the first 3 decimals coincide. The cubic root of 25996401 is about 296.2359369493.

The spelling of 25996401 in words is "twenty-five million, nine hundred ninety-six thousand, four hundred one".