2800625 has 10 divisors (see below), whose sum is σ = 3500442. Its totient is φ = 2240000.

The previous prime is 2800621. The next prime is 2800627. The reversal of 2800625 is 5260082.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 703921 + 2096704 = 839^2 + 1448^2 .

It is not a de Polignac number, because 2800625 - 2² = 2800621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2800625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800621) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1616 + ... + 2865.

2^2800625 is an apocalyptic number.

2800625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2800625 is a deficient number, since it is larger than the sum of its proper divisors (699817).

2800625 is an frugal number, since it uses more digits than its factorization.

2800625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501 (or 4486 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2800625 is about 1673.5067971180. The cubic root of 2800625 is about 140.9564609128.

The spelling of 2800625 in words is "two million, eight hundred thousand, six hundred twenty-five".