2169725 has 12 divisors (see below), whose sum is σ = 2737920. Its totient is φ = 1705200.

The previous prime is 2169707. The next prime is 2169749. The reversal of 2169725 is 5279612.

It is not a de Polignac number, because 2169725 - 2⁸ = 2169469 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 2169691 and 2169700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740 + ... + 2210.

It is an arithmetic number, because the mean of its divisors is an integer number (228160).

2^2169725 is an apocalyptic number.

2169725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2169725 is a deficient number, since it is larger than the sum of its proper divisors (568195).

2169725 is a wasteful number, since it uses less digits than its factorization.

2169725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540 (or 1535 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 2169725 is about 1472.9986422261. The cubic root of 2169725 is about 129.4597898444.

The spelling of 2169725 in words is "two million, one hundred sixty-nine thousand, seven hundred twenty-five".