1393891725 has 24 divisors (see below), whose sum is σ = 2324976192. Its totient is φ = 736825600.

The previous prime is 1393891717. The next prime is 1393891753. The reversal of 1393891725 is 5271983931.

It is not a de Polignac number, because 1393891725 - 2³ = 1393891717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73761 + ... + 90710.

It is an arithmetic number, because the mean of its divisors is an integer number (96874008).

Almost surely, 2^1393891725 is an apocalyptic number.

1393891725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1393891725 is a deficient number, since it is larger than the sum of its proper divisors (931084467).

1393891725 is a wasteful number, since it uses less digits than its factorization.

1393891725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164597 (or 164592 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 1393891725 is about 37334.8593810128. The cubic root of 1393891725 is about 1117.0596035537.

The spelling of 1393891725 in words is "one billion, three hundred ninety-three million, eight hundred ninety-one thousand, seven hundred twenty-five".