1393775725 has 12 divisors (see below), whose sum is σ = 1728778240. Its totient is φ = 1114700400.

The previous prime is 1393775707. The next prime is 1393775729. The reversal of 1393775725 is 5275773931.

It is a happy number.

It is not a de Polignac number, because 1393775725 - 2⁵ = 1393775693 is a prime.

It is a super-2 number, since 2×1393775725² = 3885221543198551250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393775729) 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, 122530 + ... + 133420.

Almost surely, 2^1393775725 is an apocalyptic number.

It is an amenable number.

1393775725 is a deficient number, since it is larger than the sum of its proper divisors (335002515).

1393775725 is a wasteful number, since it uses less digits than its factorization.

1393775725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16020 (or 16015 counting only the distinct ones).

The product of its digits is 1389150, while the sum is 49.

The square root of 1393775725 is about 37333.3058407637. The cubic root of 1393775725 is about 1117.0286153724.

The spelling of 1393775725 in words is "one billion, three hundred ninety-three million, seven hundred seventy-five thousand, seven hundred twenty-five".