2500555 has 4 divisors (see below), whose sum is σ = 3000672. Its totient is φ = 2000440.

The previous prime is 2500543. The next prime is 2500559. The reversal of 2500555 is 5550052.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2500555 - 2⁵ = 2500523 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2500559) 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, 250051 + ... + 250060.

It is an arithmetic number, because the mean of its divisors is an integer number (750168).

2^2500555 is an apocalyptic number.

2500555 is a deficient number, since it is larger than the sum of its proper divisors (500117).

2500555 is an equidigital number, since it uses as much as digits as its factorization.

2500555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500116.

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 2500555 is about 1581.3143267548. The cubic root of 2500555 is about 135.7309234318.

The spelling of 2500555 in words is "two million, five hundred thousand, five hundred fifty-five".