2581264899 has 6 divisors (see below), whose sum is σ = 3728493756. Its totient is φ = 1720843260.

The previous prime is 2581264877. The next prime is 2581264919. The reversal of 2581264899 is 9984621852.

It is a happy number.

It is not a de Polignac number, because 2581264899 - 2⁷ = 2581264771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2581264199) 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 5 ways as a sum of consecutive naturals, for example, 143403597 + ... + 143403614.

It is an arithmetic number, because the mean of its divisors is an integer number (621415626).

Almost surely, 2^2581264899 is an apocalyptic number.

2581264899 is a deficient number, since it is larger than the sum of its proper divisors (1147228857).

2581264899 is a wasteful number, since it uses less digits than its factorization.

2581264899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286807217 (or 286807214 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 2581264899 is about 50806.1502084147. The cubic root of 2581264899 is about 1371.7580745326.

The spelling of 2581264899 in words is "two billion, five hundred eighty-one million, two hundred sixty-four thousand, eight hundred ninety-nine".