2558216385 has 16 divisors (see below), whose sum is σ = 4547940480. Its totient is φ = 1364382000.

The previous prime is 2558216369. The next prime is 2558216399. The reversal of 2558216385 is 5836128552.

2558216385 is a `hidden beast` number, since 2 + 5 + 5 + 8 + 2 + 1 + 638 + 5 = 666.

It is not a de Polignac number, because 2558216385 - 2⁴ = 2558216369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2558216385.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9474741 + ... + 9475010.

It is an arithmetic number, because the mean of its divisors is an integer number (284246280).

Almost surely, 2^2558216385 is an apocalyptic number.

It is an amenable number.

2558216385 is a deficient number, since it is larger than the sum of its proper divisors (1989724095).

2558216385 is a wasteful number, since it uses less digits than its factorization.

2558216385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18949765 (or 18949759 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 2558216385 is about 50578.8135981856. The cubic root of 2558216385 is about 1367.6629815763.

The spelling of 2558216385 in words is "two billion, five hundred fifty-eight million, two hundred sixteen thousand, three hundred eighty-five".