258745578 has 48 divisors (see below), whose sum is σ = 648295200. Its totient is φ = 68239584.

The previous prime is 258745573. The next prime is 258745583. The reversal of 258745578 is 875547852.

It is an interprime number because it is at equal distance from previous prime (258745573) and next prime (258745583).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 258745578.

It is not an unprimeable number, because it can be changed into a prime (258745573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30028 + ... + 37671.

It is an arithmetic number, because the mean of its divisors is an integer number (13506150).

Almost surely, 2^258745578 is an apocalyptic number.

258745578 is an abundant number, since it is smaller than the sum of its proper divisors (389549622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258745578 is a wasteful number, since it uses less digits than its factorization.

258745578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67731 (or 67724 counting only the distinct ones).

The product of its digits is 3136000, while the sum is 51.

The square root of 258745578 is about 16085.5704903494. The cubic root of 258745578 is about 637.2223190505. Note that the first 3 decimals are identical.

The spelling of 258745578 in words is "two hundred fifty-eight million, seven hundred forty-five thousand, five hundred seventy-eight".