1397725 has 24 divisors (see below), whose sum is σ = 2033600. Its totient is φ = 952560.

The previous prime is 1397719. The next prime is 1397729. The reversal of 1397725 is 5277931.

It is not a de Polignac number, because 1397725 - 2³ = 1397717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8494 + ... + 8656.

2^1397725 is an apocalyptic number.

It is an amenable number.

1397725 is a deficient number, since it is larger than the sum of its proper divisors (635875).

1397725 is an equidigital number, since it uses as much as digits as its factorization.

1397725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 175 counting only the distinct ones).

The product of its digits is 13230, while the sum is 34.

The square root of 1397725 is about 1182.2542027838. The cubic root of 1397725 is about 111.8082657048.

The spelling of 1397725 in words is "one million, three hundred ninety-seven thousand, seven hundred twenty-five".