25708401 has 8 divisors (see below), whose sum is σ = 38086560. Its totient is φ = 17138916.

The previous prime is 25708391. The next prime is 25708427. The reversal of 25708401 is 10480752.

25708401 is a `hidden beast` number, since 257 + 0 + 8 + 401 = 666.

It is not a de Polignac number, because 25708401 - 2¹⁰ = 25707377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 952163 = 25708401 / (2 + 5 + 7 + 0 + 8 + 4 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (25708801) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 476055 + ... + 476108.

It is an arithmetic number, because the mean of its divisors is an integer number (4760820).

Almost surely, 2^25708401 is an apocalyptic number.

It is an amenable number.

25708401 is a deficient number, since it is larger than the sum of its proper divisors (12378159).

25708401 is an equidigital number, since it uses as much as digits as its factorization.

25708401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952172 (or 952166 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 25708401 is about 5070.3452545167. The cubic root of 25708401 is about 295.1379265015.

The spelling of 25708401 in words is "twenty-five million, seven hundred eight thousand, four hundred one".