25632401 has 4 divisors (see below), whose sum is σ = 25802304. Its totient is φ = 25462500.

The previous prime is 25632361. The next prime is 25632407. The reversal of 25632401 is 10423652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25632401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25632407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84725 + ... + 85026.

It is an arithmetic number, because the mean of its divisors is an integer number (6450576).

Almost surely, 2^25632401 is an apocalyptic number.

It is an amenable number.

25632401 is a deficient number, since it is larger than the sum of its proper divisors (169903).

25632401 is a wasteful number, since it uses less digits than its factorization.

25632401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169902.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25632401 is about 5062.8451487281. The cubic root of 25632401 is about 294.8468073712.

The spelling of 25632401 in words is "twenty-five million, six hundred thirty-two thousand, four hundred one".