1239025825 has 12 divisors (see below), whose sum is σ = 1585954048. Its totient is φ = 959245200.

The previous prime is 1239025813. The next prime is 1239025829. The reversal of 1239025825 is 5285209321.

It is not a de Polignac number, because 1239025825 - 2²⁷ = 1104808097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1239025829) 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, 798597 + ... + 800146.

Almost surely, 2^1239025825 is an apocalyptic number.

It is an amenable number.

1239025825 is a deficient number, since it is larger than the sum of its proper divisors (346928223).

1239025825 is a wasteful number, since it uses less digits than its factorization.

1239025825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598784 (or 1598779 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1239025825 is about 35199.7986499923. The cubic root of 1239025825 is about 1074.0556552599.

The spelling of 1239025825 in words is "one billion, two hundred thirty-nine million, twenty-five thousand, eight hundred twenty-five".