1597225 has 12 divisors (see below), whose sum is σ = 2263744. Its totient is φ = 1095120.

The previous prime is 1597187. The next prime is 1597229. The reversal of 1597225 is 5227951.

It is not a de Polignac number, because 1597225 - 2⁹ = 1596713 is a prime.

It is a super-2 number, since 2×1597225² = 5102255401250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597229) 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 11 ways as a sum of consecutive naturals, for example, 4389 + ... + 4738.

2^1597225 is an apocalyptic number.

It is an amenable number.

1597225 is a deficient number, since it is larger than the sum of its proper divisors (666519).

1597225 is an equidigital number, since it uses as much as digits as its factorization.

1597225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9144 (or 9139 counting only the distinct ones).

The product of its digits is 6300, while the sum is 31.

The square root of 1597225 is about 1263.8136729756. The cubic root of 1597225 is about 116.8930524890.

The spelling of 1597225 in words is "one million, five hundred ninety-seven thousand, two hundred twenty-five".