2505969 has 12 divisors (see below), whose sum is σ = 3634176. Its totient is φ = 1663992.

The previous prime is 2505917. The next prime is 2505983. The reversal of 2505969 is 9695052.

It is not a de Polignac number, because 2505969 - 2⁹ = 2505457 is a prime.

It is a super-2 number, since 2×2505969² = 12559761257922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2505989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3084 + ... + 3810.

It is an arithmetic number, because the mean of its divisors is an integer number (302848).

2^2505969 is an apocalyptic number.

It is an amenable number.

2505969 is a deficient number, since it is larger than the sum of its proper divisors (1128207).

2505969 is a wasteful number, since it uses less digits than its factorization.

2505969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 2505969 is about 1583.0252682759. The cubic root of 2505969 is about 135.8288107025.

The spelling of 2505969 in words is "two million, five hundred five thousand, nine hundred sixty-nine".