225725345110981 has 2 divisors, whose sum is σ = 225725345110982. Its totient is φ = 225725345110980.

The previous prime is 225725345110949. The next prime is 225725345110999. The reversal of 225725345110981 is 189011543527522.

225725345110981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215336107692225 + 10389237418756 = 14674335^2 + 3223234^2 .

It is a cyclic number.

It is not a de Polignac number, because 225725345110981 - 2⁵ = 225725345110949 is a prime.

It is a super-2 number, since 2×225725345110981² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225725345120981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112862672555490 + 112862672555491.

It is an arithmetic number, because the mean of its divisors is an integer number (112862672555491).

Almost surely, 2^{225725345110981} is an apocalyptic number.

It is an amenable number.

225725345110981 is a deficient number, since it is larger than the sum of its proper divisors (1).

225725345110981 is an equidigital number, since it uses as much as digits as its factorization.

225725345110981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 55.

The spelling of 225725345110981 in words is "two hundred twenty-five trillion, seven hundred twenty-five billion, three hundred forty-five million, one hundred ten thousand, nine hundred eighty-one".