225731159541949 has 2 divisors, whose sum is σ = 225731159541950. Its totient is φ = 225731159541948.

The previous prime is 225731159541859. The next prime is 225731159541997. The reversal of 225731159541949 is 949145951137522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222832704366724 + 2898455175225 = 14927582^2 + 1702485^2 .

It is a cyclic number.

It is not a de Polignac number, because 225731159541949 - 2²³ = 225731151153341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225731159541049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112865579770974 + 112865579770975.

It is an arithmetic number, because the mean of its divisors is an integer number (112865579770975).

Almost surely, 2^{225731159541949} is an apocalyptic number.

It is an amenable number.

225731159541949 is a deficient number, since it is larger than the sum of its proper divisors (1).

225731159541949 is an equidigital number, since it uses as much as digits as its factorization.

225731159541949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472000, while the sum is 67.

The spelling of 225731159541949 in words is "two hundred twenty-five trillion, seven hundred thirty-one billion, one hundred fifty-nine million, five hundred forty-one thousand, nine hundred forty-nine".