25469839 has 4 divisors (see below), whose sum is σ = 25950456. Its totient is φ = 24989224.

The previous prime is 25469831. The next prime is 25469863. The reversal of 25469839 is 93896452.

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

It is a cyclic number.

It is not a de Polignac number, because 25469839 - 2³ = 25469831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25469831) 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, 240229 + ... + 240334.

It is an arithmetic number, because the mean of its divisors is an integer number (6487614).

Almost surely, 2^25469839 is an apocalyptic number.

25469839 is a deficient number, since it is larger than the sum of its proper divisors (480617).

25469839 is an equidigital number, since it uses as much as digits as its factorization.

25469839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480616.

The product of its digits is 466560, while the sum is 46.

The square root of 25469839 is about 5046.7652015920. The cubic root of 25469839 is about 294.2221738336. Note that the first 3 decimals are identical.

The spelling of 25469839 in words is "twenty-five million, four hundred sixty-nine thousand, eight hundred thirty-nine".