25043979 has 4 divisors (see below), whose sum is σ = 33391976. Its totient is φ = 16695984.

The previous prime is 25043969. The next prime is 25043983. The reversal of 25043979 is 97934052.

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

It is not a de Polignac number, because 25043979 - 2⁸ = 25043723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25043959) 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, 4173994 + ... + 4173999.

It is an arithmetic number, because the mean of its divisors is an integer number (8347994).

Almost surely, 2^25043979 is an apocalyptic number.

25043979 is a deficient number, since it is larger than the sum of its proper divisors (8347997).

25043979 is an equidigital number, since it uses as much as digits as its factorization.

25043979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8347996.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 25043979 is about 5004.3959675469. The cubic root of 25043979 is about 292.5731338788.

The spelling of 25043979 in words is "twenty-five million, forty-three thousand, nine hundred seventy-nine".