2505959 has 4 divisors (see below), whose sum is σ = 2537760. Its totient is φ = 2474160.

The previous prime is 2505917. The next prime is 2505983. The reversal of 2505959 is 9595052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2505959 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15782 + ... + 15939.

It is an arithmetic number, because the mean of its divisors is an integer number (634440).

2^2505959 is an apocalyptic number.

2505959 is a deficient number, since it is larger than the sum of its proper divisors (31801).

2505959 is an equidigital number, since it uses as much as digits as its factorization.

2505959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31800.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 2505959 is about 1583.0221097635. The cubic root of 2505959 is about 135.8286300286.

The spelling of 2505959 in words is "two million, five hundred five thousand, nine hundred fifty-nine".