2665625 has 12 divisors (see below), whose sum is σ = 3335724. Its totient is φ = 2130000.

The previous prime is 2665601. The next prime is 2665627. The reversal of 2665625 is 5265662.

It can be written as a sum of positive squares in 6 ways, for example, as 2598544 + 67081 = 1612^2 + 259^2 .

It is not a de Polignac number, because 2665625 - 2¹⁰ = 2664601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2665591 and 2665600.

It is not an unprimeable number, because it can be changed into a prime (2665627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2699 + ... + 3551.

It is an arithmetic number, because the mean of its divisors is an integer number (277977).

2^2665625 is an apocalyptic number.

2665625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2665625 is a deficient number, since it is larger than the sum of its proper divisors (670099).

2665625 is an frugal number, since it uses more digits than its factorization.

2665625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 858 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 2665625 is about 1632.6741867256. The cubic root of 2665625 is about 138.6541962354.

The spelling of 2665625 in words is "two million, six hundred sixty-five thousand, six hundred twenty-five".