25423929 has 16 divisors (see below), whose sum is σ = 38184000. Its totient is φ = 16715808.

The previous prime is 25423927. The next prime is 25423933. The reversal of 25423929 is 92932452.

It is not a de Polignac number, because 25423929 - 2¹ = 25423927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25423893 and 25423902.

It is not an unprimeable number, because it can be changed into a prime (25423927) 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, 4479 + ... + 8420.

It is an arithmetic number, because the mean of its divisors is an integer number (2386500).

Almost surely, 2^25423929 is an apocalyptic number.

It is an amenable number.

25423929 is a deficient number, since it is larger than the sum of its proper divisors (12760071).

25423929 is a wasteful number, since it uses less digits than its factorization.

25423929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12981 (or 12975 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 25423929 is about 5042.2146919781. The cubic root of 25423929 is about 294.0452866515.

The spelling of 25423929 in words is "twenty-five million, four hundred twenty-three thousand, nine hundred twenty-nine".