2505660231 has 4 divisors (see below), whose sum is σ = 3340880312. Its totient is φ = 1670440152.

The previous prime is 2505660211. The next prime is 2505660251. The reversal of 2505660231 is 1320665052.

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

It is an interprime number because it is at equal distance from previous prime (2505660211) and next prime (2505660251).

It is not a de Polignac number, because 2505660231 - 2⁶ = 2505660167 is a prime.

It is a super-2 number, since 2×2505660231² = 12556666386429946722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505660211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417610036 + ... + 417610041.

It is an arithmetic number, because the mean of its divisors is an integer number (835220078).

Almost surely, 2^2505660231 is an apocalyptic number.

2505660231 is a deficient number, since it is larger than the sum of its proper divisors (835220081).

2505660231 is an equidigital number, since it uses as much as digits as its factorization.

2505660231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835220080.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2505660231 is about 50056.5703080025. The cubic root of 2505660231 is about 1358.2323182946.

The spelling of 2505660231 in words is "two billion, five hundred five million, six hundred sixty thousand, two hundred thirty-one".