2503905 has 16 divisors (see below), whose sum is σ = 4058880. Its totient is φ = 1317888.

The previous prime is 2503883. The next prime is 2503909. The reversal of 2503905 is 5093052.

It is not a de Polignac number, because 2503905 - 2⁵ = 2503873 is a prime.

2503905 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2503909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129 + ... + 2241.

It is an arithmetic number, because the mean of its divisors is an integer number (253680).

2^2503905 is an apocalyptic number.

It is an amenable number.

2503905 is a deficient number, since it is larger than the sum of its proper divisors (1554975).

2503905 is a wasteful number, since it uses less digits than its factorization.

2503905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 2503905 is about 1582.3732176702. The cubic root of 2503905 is about 135.7915094072.

Adding to 2503905 its reverse (5093052), we get a palindrome (7596957).

The spelling of 2503905 in words is "two million, five hundred three thousand, nine hundred five".