1397925 has 48 divisors (see below), whose sum is σ = 2728000. Its totient is φ = 699840.

The previous prime is 1397909. The next prime is 1397933. The reversal of 1397925 is 5297931.

It is not a de Polignac number, because 1397925 - 2⁴ = 1397909 is a prime.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1397925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12771 + ... + 12879.

2^1397925 is an apocalyptic number.

1397925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1397925 is a deficient number, since it is larger than the sum of its proper divisors (1330075).

1397925 is a wasteful number, since it uses less digits than its factorization.

1397925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 136 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 1397925 is about 1182.3387839363. The cubic root of 1397925 is about 111.8135983195.

The spelling of 1397925 in words is "one million, three hundred ninety-seven thousand, nine hundred twenty-five".