228900090625 has 24 divisors (see below), whose sum is σ = 286183792440. Its totient is φ = 183070800000.

The previous prime is 228900090613. The next prime is 228900090637. The reversal of 228900090625 is 526090009822.

It is an interprime number because it is at equal distance from previous prime (228900090613) and next prime (228900090637).

It can be written as a sum of positive squares in 12 ways, for example, as 220878380529 + 8021710096 = 469977^2 + 89564^2 .

It is a de Polignac number, because none of the positive numbers 2^k-228900090625 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15520755 + ... + 15535495.

It is an arithmetic number, because the mean of its divisors is an integer number (11924324685).

Almost surely, 2^228900090625 is an apocalyptic number.

228900090625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228900090625 is a deficient number, since it is larger than the sum of its proper divisors (57283701815).

228900090625 is an frugal number, since it uses more digits than its factorization.

228900090625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19735 (or 19715 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 228900090625 in words is "two hundred twenty-eight billion, nine hundred million, ninety thousand, six hundred twenty-five".