25133969 has 4 divisors (see below), whose sum is σ = 28724544. Its totient is φ = 21543396.

The previous prime is 25133947. The next prime is 25133971. The reversal of 25133969 is 96933152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-25133969 is a prime.

It is a super-2 number, since 2×25133969² = 1263432795385922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25133909) 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, 1795277 + ... + 1795290.

It is an arithmetic number, because the mean of its divisors is an integer number (7181136).

Almost surely, 2^25133969 is an apocalyptic number.

It is an amenable number.

25133969 is a deficient number, since it is larger than the sum of its proper divisors (3590575).

25133969 is an equidigital number, since it uses as much as digits as its factorization.

25133969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590574.

The product of its digits is 43740, while the sum is 38.

The square root of 25133969 is about 5013.3790002353. The cubic root of 25133969 is about 292.9231472655.

The spelling of 25133969 in words is "twenty-five million, one hundred thirty-three thousand, nine hundred sixty-nine".