1247366725 has 12 divisors (see below), whose sum is σ = 1687347360. Its totient is φ = 907175600.

The previous prime is 1247366677. The next prime is 1247366741. The reversal of 1247366725 is 5276637421.

It is not a de Polignac number, because 1247366725 - 2⁷ = 1247366597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2267665 + ... + 2268214.

It is an arithmetic number, because the mean of its divisors is an integer number (140612280).

Almost surely, 2^1247366725 is an apocalyptic number.

It is an amenable number.

1247366725 is a deficient number, since it is larger than the sum of its proper divisors (439980635).

1247366725 is a wasteful number, since it uses less digits than its factorization.

1247366725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535900 (or 4535895 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The square root of 1247366725 is about 35318.0792937555. The cubic root of 1247366725 is about 1076.4603840227.

The spelling of 1247366725 in words is "one billion, two hundred forty-seven million, three hundred sixty-six thousand, seven hundred twenty-five".