225005743997 has 2 divisors, whose sum is σ = 225005743998. Its totient is φ = 225005743996.

The previous prime is 225005743993. The next prime is 225005744009. The reversal of 225005743997 is 799347500522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131898986041 + 93106757956 = 363179^2 + 305134^2 .

It is a cyclic number.

It is not a de Polignac number, because 225005743997 - 2² = 225005743993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225005743993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112502871998 + 112502871999.

It is an arithmetic number, because the mean of its divisors is an integer number (112502871999).

Almost surely, 2^225005743997 is an apocalyptic number.

It is an amenable number.

225005743997 is a deficient number, since it is larger than the sum of its proper divisors (1).

225005743997 is an equidigital number, since it uses as much as digits as its factorization.

225005743997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 225005743997 in words is "two hundred twenty-five billion, five million, seven hundred forty-three thousand, nine hundred ninety-seven".