1393690725 has 96 divisors (see below), whose sum is σ = 2948739840. Its totient is φ = 632171520.

The previous prime is 1393690723. The next prime is 1393690733. The reversal of 1393690725 is 5270963931.

It is not a de Polignac number, because 1393690725 - 2¹ = 1393690723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393690723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 646249 + ... + 648401.

It is an arithmetic number, because the mean of its divisors is an integer number (30716040).

Almost surely, 2^1393690725 is an apocalyptic number.

1393690725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1393690725 is an abundant number, since it is smaller than the sum of its proper divisors (1555049115).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1393690725 is a wasteful number, since it uses less digits than its factorization.

1393690725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316 (or 2305 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 1393690725 is about 37332.1674297113. The cubic root of 1393690725 is about 1117.0059074238.

The spelling of 1393690725 in words is "one billion, three hundred ninety-three million, six hundred ninety thousand, seven hundred twenty-five".