1925997 has 16 divisors (see below), whose sum is σ = 2715648. Its totient is φ = 1211760.

The previous prime is 1925993. The next prime is 1926007. The reversal of 1925997 is 7995291.

It is not a de Polignac number, because 1925997 - 2² = 1925993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1925993) 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 15 ways as a sum of consecutive naturals, for example, 6972 + ... + 7242.

It is an arithmetic number, because the mean of its divisors is an integer number (169728).

2^1925997 is an apocalyptic number.

It is an amenable number.

1925997 is a deficient number, since it is larger than the sum of its proper divisors (789651).

1925997 is a wasteful number, since it uses less digits than its factorization.

1925997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400.

The product of its digits is 51030, while the sum is 42.

The square root of 1925997 is about 1387.8029399018. The cubic root of 1925997 is about 124.4185690308.

The spelling of 1925997 in words is "one million, nine hundred twenty-five thousand, nine hundred ninety-seven".