25613401 has 6 divisors (see below), whose sum is σ = 28153706. Its totient is φ = 23284800.

The previous prime is 25613381. The next prime is 25613411. The reversal of 25613401 is 10431652.

It can be written as a sum of positive squares in only one way, i.e., 25603600 + 9801 = 5060^2 + 99^2 .

It is not a de Polignac number, because 25613401 - 2⁹ = 25612889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25613411) 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, 105720 + ... + 105961.

Almost surely, 2^25613401 is an apocalyptic number.

It is an amenable number.

25613401 is a deficient number, since it is larger than the sum of its proper divisors (2540305).

25613401 is a wasteful number, since it uses less digits than its factorization.

25613401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211703 (or 211692 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 25613401 is about 5060.9683855958. The cubic root of 25613401 is about 294.7739376975.

The spelling of 25613401 in words is "twenty-five million, six hundred thirteen thousand, four hundred one".