2109625 has 16 divisors (see below), whose sum is σ = 3010176. Its totient is φ = 1446000.

The previous prime is 2109619. The next prime is 2109641. The reversal of 2109625 is 5269012.

It is not a de Polignac number, because 2109625 - 2³ = 2109617 is a prime.

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

It is a Duffinian number.

2109625 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2109625.

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, 331 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (188136).

2^2109625 is an apocalyptic number.

2109625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2109625 is a deficient number, since it is larger than the sum of its proper divisors (900551).

2109625 is an equidigital number, since it uses as much as digits as its factorization.

2109625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433 (or 2423 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2109625 is about 1452.4548185744. The cubic root of 2109625 is about 128.2532623960.

The spelling of 2109625 in words is "two million, one hundred nine thousand, six hundred twenty-five".