25317091 has 8 divisors (see below), whose sum is σ = 25685504. Its totient is φ = 24951240.

The previous prime is 25317073. The next prime is 25317119. The reversal of 25317091 is 19071352.

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 25317091 - 2⁵ = 25317059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25317011) 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, 27460 + ... + 28366.

It is an arithmetic number, because the mean of its divisors is an integer number (3210688).

Almost surely, 2^25317091 is an apocalyptic number.

25317091 is a deficient number, since it is larger than the sum of its proper divisors (368413).

25317091 is a wasteful number, since it uses less digits than its factorization.

25317091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 25317091 is about 5031.6091859364. The cubic root of 25317091 is about 293.6328232811.

The spelling of 25317091 in words is "twenty-five million, three hundred seventeen thousand, ninety-one".