25891953 has 8 divisors (see below), whose sum is σ = 34645728. Its totient is φ = 17199744.

The previous prime is 25891937. The next prime is 25891963. The reversal of 25891953 is 35919852.

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

It is not a de Polignac number, because 25891953 - 2⁴ = 25891937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25891963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14400 + ... + 16097.

It is an arithmetic number, because the mean of its divisors is an integer number (4330716).

Almost surely, 2^25891953 is an apocalyptic number.

It is an amenable number.

25891953 is a deficient number, since it is larger than the sum of its proper divisors (8753775).

25891953 is a wasteful number, since it uses less digits than its factorization.

25891953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30783.

The product of its digits is 97200, while the sum is 42.

The square root of 25891953 is about 5088.4136034721. The cubic root of 25891953 is about 295.8386667997.

The spelling of 25891953 in words is "twenty-five million, eight hundred ninety-one thousand, nine hundred fifty-three".