1925665 has 16 divisors (see below), whose sum is σ = 2714112. Its totient is φ = 1283904.

The previous prime is 1925653. The next prime is 1925681. The reversal of 1925665 is 5665291.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1925665 - 2¹⁹ = 1401377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1925665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552 + ... + 2038.

It is an arithmetic number, because the mean of its divisors is an integer number (169632).

2^1925665 is an apocalyptic number.

It is an amenable number.

1925665 is a deficient number, since it is larger than the sum of its proper divisors (788447).

1925665 is a wasteful number, since it uses less digits than its factorization.

1925665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536.

The product of its digits is 16200, while the sum is 34.

The square root of 1925665 is about 1387.6833212228. The cubic root of 1925665 is about 124.4114196015.

It can be divided in two parts, 19256 and 65, that added together give a square (19321 = 139²).

The spelling of 1925665 in words is "one million, nine hundred twenty-five thousand, six hundred sixty-five".