2625625 has 10 divisors (see below), whose sum is σ = 3281762. Its totient is φ = 2100000.

The previous prime is 2625619. The next prime is 2625641. The reversal of 2625625 is 5265262.

It can be written as a sum of positive squares in 5 ways, for example, as 1734489 + 891136 = 1317^2 + 944^2 .

It is not a de Polignac number, because 2625625 - 2³ = 2625617 is a prime.

It is a Duffinian number.

2625625 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2625593 and 2625602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1476 + ... + 2725.

2^2625625 is an apocalyptic number.

2625625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2625625 is a deficient number, since it is larger than the sum of its proper divisors (656137).

2625625 is an frugal number, since it uses more digits than its factorization.

2625625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221 (or 4206 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 2625625 is about 1620.3780423099. The cubic root of 2625625 is about 137.9571560621.

It can be divided in two parts, 26 and 25625, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 2625625 in words is "two million, six hundred twenty-five thousand, six hundred twenty-five".