1565125 has 16 divisors (see below), whose sum is σ = 2059200. Its totient is φ = 1184400.

The previous prime is 1565117. The next prime is 1565129. The reversal of 1565125 is 5215651.

It is not a de Polignac number, because 1565125 - 2³ = 1565117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1565125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1565129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2046 + ... + 2704.

It is an arithmetic number, because the mean of its divisors is an integer number (128700).

2^1565125 is an apocalyptic number.

It is an amenable number.

1565125 is a deficient number, since it is larger than the sum of its proper divisors (494075).

1565125 is an equidigital number, since it uses as much as digits as its factorization.

1565125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 683 counting only the distinct ones).

The product of its digits is 1500, while the sum is 25.

The square root of 1565125 is about 1251.0495593701. The cubic root of 1565125 is about 116.1046667279.

It can be divided in two parts, 1565 and 125, that multiplied together give a triangular number (195625 = T₆₂₅).

The spelling of 1565125 in words is "one million, five hundred sixty-five thousand, one hundred twenty-five".