2502499991 has 2 divisors, whose sum is σ = 2502499992. Its totient is φ = 2502499990.

The previous prime is 2502499969. The next prime is 2502499997. The reversal of 2502499991 is 1999942052.

2502499991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2502499991 - 2¹⁰ = 2502498967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2502499997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251249995 + 1251249996.

It is an arithmetic number, because the mean of its divisors is an integer number (1251249996).

Almost surely, 2^2502499991 is an apocalyptic number.

2502499991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2502499991 is an equidigital number, since it uses as much as digits as its factorization.

2502499991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 2502499991 is about 50024.9936631680. The cubic root of 2502499991 is about 1357.6610588887.

The spelling of 2502499991 in words is "two billion, five hundred two million, four hundred ninety-nine thousand, nine hundred ninety-one".