25134891 has 16 divisors (see below), whose sum is σ = 37353600. Its totient is φ = 14940288.

The previous prime is 25134887. The next prime is 25134899. The reversal of 25134891 is 19843152.

It is not a de Polignac number, because 25134891 - 2² = 25134887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25134899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12001 + ... + 13938.

It is an arithmetic number, because the mean of its divisors is an integer number (2334600).

Almost surely, 2^25134891 is an apocalyptic number.

25134891 is a deficient number, since it is larger than the sum of its proper divisors (12218709).

25134891 is a wasteful number, since it uses less digits than its factorization.

25134891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25978.

The product of its digits is 8640, while the sum is 33.

The square root of 25134891 is about 5013.4709533416. The cubic root of 25134891 is about 292.9267290295.

The spelling of 25134891 in words is "twenty-five million, one hundred thirty-four thousand, eight hundred ninety-one".