225552835781 has 16 divisors (see below), whose sum is σ = 277634066304. Its totient is φ = 178439730624.

The previous prime is 225552835769. The next prime is 225552835847. The reversal of 225552835781 is 187538255522.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225552835781 is a prime.

It is a super-4 number, since 4×225552835781⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225552835751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723875 + ... + 987471.

It is an arithmetic number, because the mean of its divisors is an integer number (17352129144).

Almost surely, 2^225552835781 is an apocalyptic number.

It is an amenable number.

225552835781 is a deficient number, since it is larger than the sum of its proper divisors (52081230523).

225552835781 is a wasteful number, since it uses less digits than its factorization.

225552835781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273020.

The product of its digits is 6720000, while the sum is 53.

The spelling of 225552835781 in words is "two hundred twenty-five billion, five hundred fifty-two million, eight hundred thirty-five thousand, seven hundred eighty-one".