1397425 has 6 divisors (see below), whose sum is σ = 1732838. Its totient is φ = 1117920.

The previous prime is 1397359. The next prime is 1397437. The reversal of 1397425 is 5247931.

It can be written as a sum of positive squares in 3 ways, for example, as 106929 + 1290496 = 327^2 + 1136^2 .

It is not a de Polignac number, because 1397425 - 2¹³ = 1389233 is a prime.

It is a Duffinian number.

1397425 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27924 + ... + 27973.

2^1397425 is an apocalyptic number.

It is an amenable number.

1397425 is a deficient number, since it is larger than the sum of its proper divisors (335413).

1397425 is an equidigital number, since it uses as much as digits as its factorization.

1397425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55907 (or 55902 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 1397425 is about 1182.1273197080. The cubic root of 1397425 is about 111.8002658289.

The spelling of 1397425 in words is "one million, three hundred ninety-seven thousand, four hundred twenty-five".