25876531 has 4 divisors (see below), whose sum is σ = 25911472. Its totient is φ = 25841592.

The previous prime is 25876519. The next prime is 25876547. The reversal of 25876531 is 13567852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25876531 is a prime.

It is a super-2 number, since 2×25876531² = 1339189713187922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25876511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16335 + ... + 17848.

It is an arithmetic number, because the mean of its divisors is an integer number (6477868).

Almost surely, 2^25876531 is an apocalyptic number.

25876531 is a deficient number, since it is larger than the sum of its proper divisors (34941).

25876531 is an equidigital number, since it uses as much as digits as its factorization.

25876531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34940.

The product of its digits is 50400, while the sum is 37.

The square root of 25876531 is about 5086.8979742079. The cubic root of 25876531 is about 295.7799184304.

The spelling of 25876531 in words is "twenty-five million, eight hundred seventy-six thousand, five hundred thirty-one".