25431601 has 8 divisors (see below), whose sum is σ = 27735680. Its totient is φ = 23177232.

The previous prime is 25431587. The next prime is 25431611. The reversal of 25431601 is 10613452.

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

It is not a de Polignac number, because 25431601 - 2⁵ = 25431569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25431611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11355 + ... + 13408.

It is an arithmetic number, because the mean of its divisors is an integer number (3466960).

Almost surely, 2^25431601 is an apocalyptic number.

It is an amenable number.

25431601 is a deficient number, since it is larger than the sum of its proper divisors (2304079).

25431601 is a wasteful number, since it uses less digits than its factorization.

25431601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24855.

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

The square root of 25431601 is about 5042.9754114015. The cubic root of 25431601 is about 294.0748610020.

The spelling of 25431601 in words is "twenty-five million, four hundred thirty-one thousand, six hundred one".