2505830731 has 2 divisors, whose sum is σ = 2505830732. Its totient is φ = 2505830730.

The previous prime is 2505830699. The next prime is 2505830807. The reversal of 2505830731 is 1370385052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2505830731 - 2⁵ = 2505830699 is a prime.

It is a super-2 number, since 2×2505830731² = 12558375304847988722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2505830531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252915365 + 1252915366.

It is an arithmetic number, because the mean of its divisors is an integer number (1252915366).

Almost surely, 2^2505830731 is an apocalyptic number.

2505830731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505830731 is an equidigital number, since it uses as much as digits as its factorization.

2505830731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 2505830731 is about 50058.2733521643. The cubic root of 2505830731 is about 1358.2631249931.

The spelling of 2505830731 in words is "two billion, five hundred five million, eight hundred thirty thousand, seven hundred thirty-one".