25069839 has 12 divisors (see below), whose sum is σ = 34945176. Its totient is φ = 15985552.

The previous prime is 25069801. The next prime is 25069871. The reversal of 25069839 is 93896052.

It is not a de Polignac number, because 25069839 - 2⁷ = 25069711 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25069839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25069139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6312 + ... + 9485.

It is an arithmetic number, because the mean of its divisors is an integer number (2912098).

Almost surely, 2^25069839 is an apocalyptic number.

25069839 is a deficient number, since it is larger than the sum of its proper divisors (9875337).

25069839 is a wasteful number, since it uses less digits than its factorization.

25069839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15846 (or 15823 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 25069839 is about 5006.9790293150. The cubic root of 25069839 is about 292.6738013030.

The spelling of 25069839 in words is "twenty-five million, sixty-nine thousand, eight hundred thirty-nine".