223001125778 has 18 divisors (see below), whose sum is σ = 336210314823. Its totient is φ = 110933905740.

The previous prime is 223001125769. The next prime is 223001125993. The reversal of 223001125778 is 877521100322.

It can be written as a sum of positive squares in only one way, i.e., 111500562889 + 111500562889 = 333917^2 + 333917^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333917.

It is a super-2 number, since 2×223001125778² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 151597583 + ... + 151599053.

Almost surely, 2^223001125778 is an apocalyptic number.

223001125778 is a deficient number, since it is larger than the sum of its proper divisors (113209189045).

223001125778 is an frugal number, since it uses more digits than its factorization.

223001125778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398 (or 1700 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 223001125778 in words is "two hundred twenty-three billion, one million, one hundred twenty-five thousand, seven hundred seventy-eight".