25345691 has 12 divisors (see below), whose sum is σ = 31219128. Its totient is φ = 20446272.

The previous prime is 25345669. The next prime is 25345699. The reversal of 25345691 is 19654352.

It is not a de Polignac number, because 25345691 - 2¹⁴ = 25329307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25345699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14381 + ... + 16046.

It is an arithmetic number, because the mean of its divisors is an integer number (2601594).

Almost surely, 2^25345691 is an apocalyptic number.

25345691 is a deficient number, since it is larger than the sum of its proper divisors (5873437).

25345691 is a wasteful number, since it uses less digits than its factorization.

25345691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30458 (or 30451 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 25345691 is about 5034.4504168777. The cubic root of 25345691 is about 293.7433512302.

The spelling of 25345691 in words is "twenty-five million, three hundred forty-five thousand, six hundred ninety-one".