25645722 has 8 divisors (see below), whose sum is σ = 51291456. Its totient is φ = 8548572.

The previous prime is 25645721. The next prime is 25645723. The reversal of 25645722 is 22754652.

It is an interprime number because it is at equal distance from previous prime (25645721) and next prime (25645723).

It is a sphenic number, since it is the product of 3 distinct primes.

25645722 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (25645721) 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, 2137138 + ... + 2137149.

It is an arithmetic number, because the mean of its divisors is an integer number (6411432).

Almost surely, 2^25645722 is an apocalyptic number.

25645722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25645722 is a wasteful number, since it uses less digits than its factorization.

25645722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274292.

The product of its digits is 33600, while the sum is 33.

The square root of 25645722 is about 5064.1605424789. The cubic root of 25645722 is about 294.8978752120.

The spelling of 25645722 in words is "twenty-five million, six hundred forty-five thousand, seven hundred twenty-two".