225498387977 has 2 divisors, whose sum is σ = 225498387978. Its totient is φ = 225498387976.

The previous prime is 225498387913. The next prime is 225498388013. The reversal of 225498387977 is 779783894522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225135066256 + 363321721 = 474484^2 + 19061^2 .

It is a cyclic number.

It is not a de Polignac number, because 225498387977 - 2⁶ = 225498387913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225498387977.

It is not a weakly prime, because it can be changed into another prime (225498387577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112749193988 + 112749193989.

It is an arithmetic number, because the mean of its divisors is an integer number (112749193989).

Almost surely, 2^225498387977 is an apocalyptic number.

It is an amenable number.

225498387977 is a deficient number, since it is larger than the sum of its proper divisors (1).

225498387977 is an equidigital number, since it uses as much as digits as its factorization.

225498387977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 426746880, while the sum is 71.

The spelling of 225498387977 in words is "two hundred twenty-five billion, four hundred ninety-eight million, three hundred eighty-seven thousand, nine hundred seventy-seven".