2505490 has 16 divisors (see below), whose sum is σ = 4857048. Its totient is φ = 925056.

The previous prime is 2505487. The next prime is 2505499. The reversal of 2505490 is 945052.

It can be written as a sum of positive squares in 4 ways, for example, as 1750329 + 755161 = 1323^2 + 869^2 .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2505499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9507 + ... + 9766.

2^2505490 is an apocalyptic number.

2505490 is a deficient number, since it is larger than the sum of its proper divisors (2351558).

2505490 is a wasteful number, since it uses less digits than its factorization.

2505490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19293.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2505490 is about 1582.8739684511. The cubic root of 2505490 is about 135.8201558806.

The spelling of 2505490 in words is "two million, five hundred five thousand, four hundred ninety".