100256285 has 4 divisors (see below), whose sum is σ = 120307548. Its totient is φ = 80205024.

The previous prime is 100256269. The next prime is 100256297. The reversal of 100256285 is 582652001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14638276 + 85618009 = 3826^2 + 9253^2 .

It is a cyclic number.

It is not a de Polignac number, because 100256285 - 2⁴ = 100256269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10025624 + ... + 10025633.

It is an arithmetic number, because the mean of its divisors is an integer number (30076887).

Almost surely, 2^100256285 is an apocalyptic number.

It is an amenable number.

100256285 is a deficient number, since it is larger than the sum of its proper divisors (20051263).

100256285 is an equidigital number, since it uses as much as digits as its factorization.

100256285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20051262.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 100256285 is about 10012.8060502538. The cubic root of 100256285 is about 464.5550682977. Note that the first 3 decimals are identical.

The spelling of 100256285 in words is "one hundred million, two hundred fifty-six thousand, two hundred eighty-five".