2550725 has 12 divisors (see below), whose sum is σ = 3183204. Its totient is φ = 2027520.

The previous prime is 2550721. The next prime is 2550727. The reversal of 2550725 is 5270552.

It can be written as a sum of positive squares in 6 ways, for example, as 188356 + 2362369 = 434^2 + 1537^2 .

It is not a de Polignac number, because 2550725 - 2² = 2550721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2550694 and 2550703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6227 + ... + 6623.

It is an arithmetic number, because the mean of its divisors is an integer number (265267).

2^2550725 is an apocalyptic number.

2550725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2550725 is a deficient number, since it is larger than the sum of its proper divisors (632479).

2550725 is a wasteful number, since it uses less digits than its factorization.

2550725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 2550725 is about 1597.0989324397. The cubic root of 2550725 is about 136.6326671985.

The spelling of 2550725 in words is "two million, five hundred fifty thousand, seven hundred twenty-five".