228515625801 has 6 divisors (see below), whose sum is σ = 330078126170. Its totient is φ = 152343750528.

The previous prime is 228515625749. The next prime is 228515626039. The reversal of 228515625801 is 108526515822.

228515625801 is a `hidden beast` number, since 2 + 2 + 8 + 5 + 1 + 5 + 62 + 580 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 215221766400 + 13293859401 = 463920^2 + 115299^2 .

It is not a de Polignac number, because 228515625801 - 2²⁶ = 228448516937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228515625601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12695312536 + ... + 12695312553.

Almost surely, 2^228515625801 is an apocalyptic number.

It is an amenable number.

228515625801 is a deficient number, since it is larger than the sum of its proper divisors (101562500369).

228515625801 is a wasteful number, since it uses less digits than its factorization.

228515625801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25390625095 (or 25390625092 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 228515625801 in words is "two hundred twenty-eight billion, five hundred fifteen million, six hundred twenty-five thousand, eight hundred one".