25530917 has 8 divisors (see below), whose sum is σ = 26199936. Its totient is φ = 24867232.

The previous prime is 25530913. The next prime is 25530941. The reversal of 25530917 is 71903552.

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

It is a cyclic number.

It is not a de Polignac number, because 25530917 - 2² = 25530913 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530913) 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, 9473 + ... + 11865.

It is an arithmetic number, because the mean of its divisors is an integer number (3274992).

Almost surely, 2^25530917 is an apocalyptic number.

It is an amenable number.

25530917 is a deficient number, since it is larger than the sum of its proper divisors (669019).

25530917 is a wasteful number, since it uses less digits than its factorization.

25530917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 25530917 is about 5052.8127810161. The cubic root of 25530917 is about 294.4571727842.

The spelling of 25530917 in words is "twenty-five million, five hundred thirty thousand, nine hundred seventeen".