2559999998 has 32 divisors (see below), whose sum is σ = 4240512000. Its totient is φ = 1154291040.

The previous prime is 2559999997. The next prime is 2560000019. The reversal of 2559999998 is 8999999552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2559999997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61883 + ... + 94601.

It is an arithmetic number, because the mean of its divisors is an integer number (132516000).

Almost surely, 2^2559999998 is an apocalyptic number.

2559999998 is a deficient number, since it is larger than the sum of its proper divisors (1680512002).

2559999998 is a wasteful number, since it uses less digits than its factorization.

2559999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32840.

The product of its digits is 212576400, while the sum is 74.

The square root of 2559999998 is about 50596.4425429298. The cubic root of 2559999998 is about 1367.9807569851.

The spelling of 2559999998 in words is "two billion, five hundred fifty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".