1997025 has 12 divisors (see below), whose sum is σ = 3301872. Its totient is φ = 1065040.

The previous prime is 1997003. The next prime is 1997029. The reversal of 1997025 is 5207991.

It is not a de Polignac number, because 1997025 - 2¹¹ = 1994977 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1997029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13239 + ... + 13388.

It is an arithmetic number, because the mean of its divisors is an integer number (275156).

2^1997025 is an apocalyptic number.

1997025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1997025 is a deficient number, since it is larger than the sum of its proper divisors (1304847).

1997025 is a wasteful number, since it uses less digits than its factorization.

1997025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26640 (or 26635 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 1997025 is about 1413.1613495988. The cubic root of 1997025 is about 125.9296029032.

The spelling of 1997025 in words is "one million, nine hundred ninety-seven thousand, twenty-five".