2625209 has 4 divisors (see below), whose sum is σ = 2635920. Its totient is φ = 2614500.

The previous prime is 2625169. The next prime is 2625223. The reversal of 2625209 is 9025262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2625209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2625229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4979 + ... + 5480.

It is an arithmetic number, because the mean of its divisors is an integer number (658980).

2^2625209 is an apocalyptic number.

It is an amenable number.

2625209 is a deficient number, since it is larger than the sum of its proper divisors (10711).

2625209 is a wasteful number, since it uses less digits than its factorization.

2625209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10710.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2625209 is about 1620.2496721185. The cubic root of 2625209 is about 137.9498697705.

The spelling of 2625209 in words is "two million, six hundred twenty-five thousand, two hundred nine".