2500605 has 16 divisors (see below), whose sum is σ = 4445760. Its totient is φ = 1333584.

The previous prime is 2500601. The next prime is 2500621. The reversal of 2500605 is 5060052.

It is not a de Polignac number, because 2500605 - 2² = 2500601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500601) 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, 9127 + ... + 9396.

It is an arithmetic number, because the mean of its divisors is an integer number (277860).

2^2500605 is an apocalyptic number.

It is an amenable number.

2500605 is a deficient number, since it is larger than the sum of its proper divisors (1945155).

2500605 is a wasteful number, since it uses less digits than its factorization.

2500605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18537 (or 18531 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2500605 is about 1581.3301363093. The cubic root of 2500605 is about 135.7318280978.

Adding to 2500605 its reverse (5060052), we get a palindrome (7560657).

The spelling of 2500605 in words is "two million, five hundred thousand, six hundred five".