225701960978 has 18 divisors (see below), whose sum is σ = 366612934527. Its totient is φ = 104166104640.

The previous prime is 225701960977. The next prime is 225701961013. The reversal of 225701960978 is 879069107522.

It can be written as a sum of positive squares in 5 ways, for example, as 5221941169 + 220480019809 = 72263^2 + 469553^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=335933.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225701960971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8721338 + ... + 8747178.

Almost surely, 2^225701960978 is an apocalyptic number.

225701960978 is a deficient number, since it is larger than the sum of its proper divisors (140910973549).

225701960978 is an frugal number, since it uses more digits than its factorization.

225701960978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51710 (or 25856 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 225701960978 in words is "two hundred twenty-five billion, seven hundred one million, nine hundred sixty thousand, nine hundred seventy-eight".