1397825 has 48 divisors (see below), whose sum is σ = 2249856. Its totient is φ = 844800.

The previous prime is 1397783. The next prime is 1397833. The reversal of 1397825 is 5287931.

It is not a de Polignac number, because 1397825 - 2⁶ = 1397761 is a prime.

It is a Duffinian number.

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, 60764 + ... + 60786.

It is an arithmetic number, because the mean of its divisors is an integer number (46872).

2^1397825 is an apocalyptic number.

It is an amenable number.

1397825 is a deficient number, since it is larger than the sum of its proper divisors (852031).

1397825 is a wasteful number, since it uses less digits than its factorization.

1397825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 69 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 1397825 is about 1182.2964941164. The cubic root of 1397825 is about 111.8109320757.

It can be divided in two parts, 1397 and 825, that added together give a palindrome (2222).

The spelling of 1397825 in words is "one million, three hundred ninety-seven thousand, eight hundred twenty-five".