225307705981 has 8 divisors (see below), whose sum is σ = 225588053504. Its totient is φ = 225027467280.

The previous prime is 225307705969. The next prime is 225307706033. The reversal of 225307705981 is 189507703522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225307705981 - 2³⁷ = 87868752509 is a prime.

It is a super-2 number, since 2×225307705981² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225307705081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4596655 + ... + 4645411.

It is an arithmetic number, because the mean of its divisors is an integer number (28198506688).

Almost surely, 2^225307705981 is an apocalyptic number.

It is an amenable number.

225307705981 is a deficient number, since it is larger than the sum of its proper divisors (280347523).

225307705981 is an equidigital number, since it uses as much as digits as its factorization.

225307705981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54411.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 225307705981 in words is "two hundred twenty-five billion, three hundred seven million, seven hundred five thousand, nine hundred eighty-one".