25622401 has 4 divisors (see below), whose sum is σ = 29282752. Its totient is φ = 21962052.

The previous prime is 25622381. The next prime is 25622413. The reversal of 25622401 is 10422652.

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 not a de Polignac number, because 25622401 - 2⁵ = 25622369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25622491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830165 + ... + 1830178.

It is an arithmetic number, because the mean of its divisors is an integer number (7320688).

Almost surely, 2^25622401 is an apocalyptic number.

It is an amenable number.

25622401 is a deficient number, since it is larger than the sum of its proper divisors (3660351).

25622401 is an equidigital number, since it uses as much as digits as its factorization.

25622401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660350.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 25622401 is about 5061.8574653975. The cubic root of 25622401 is about 294.8084594018.

The spelling of 25622401 in words is "twenty-five million, six hundred twenty-two thousand, four hundred one".