2505904 has 10 divisors (see below), whose sum is σ = 4855220. Its totient is φ = 1252944.

The previous prime is 2505901. The next prime is 2505917. The reversal of 2505904 is 4095052.

It is not an unprimeable number, because it can be changed into a prime (2505901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78294 + ... + 78325.

It is an arithmetic number, because the mean of its divisors is an integer number (485522).

2^2505904 is an apocalyptic number.

It is an amenable number.

2505904 is a deficient number, since it is larger than the sum of its proper divisors (2349316).

2505904 is a wasteful number, since it uses less digits than its factorization.

2505904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156627 (or 156621 counting only the distinct ones).

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

The square root of 2505904 is about 1583.0047378325. The cubic root of 2505904 is about 135.8276363133.

The spelling of 2505904 in words is "two million, five hundred five thousand, nine hundred four".