2557432802 has 16 divisors (see below), whose sum is σ = 3969795960. Its totient is φ = 1234197888.

The previous prime is 2557432799. The next prime is 2557432811. The reversal of 2557432802 is 2082347552.

It can be written as a sum of positive squares in 4 ways, for example, as 2556414721 + 1018081 = 50561^2 + 1009^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 221558 + ... + 232814.

Almost surely, 2^2557432802 is an apocalyptic number.

2557432802 is a deficient number, since it is larger than the sum of its proper divisors (1412363158).

2557432802 is a wasteful number, since it uses less digits than its factorization.

2557432802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15205.

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 2557432802 is about 50571.0668465675. The cubic root of 2557432802 is about 1367.5233286908.

The spelling of 2557432802 in words is "two billion, five hundred fifty-seven million, four hundred thirty-two thousand, eight hundred two".