225855172379 has 2 divisors, whose sum is σ = 225855172380. Its totient is φ = 225855172378.

The previous prime is 225855172373. The next prime is 225855172399. The reversal of 225855172379 is 973271558522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225855172379 - 2²⁴ = 225838395163 is a prime.

It is not a weakly prime, because it can be changed into another prime (225855172373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112927586189 + 112927586190.

It is an arithmetic number, because the mean of its divisors is an integer number (112927586190).

Almost surely, 2^225855172379 is an apocalyptic number.

225855172379 is a deficient number, since it is larger than the sum of its proper divisors (1).

225855172379 is an equidigital number, since it uses as much as digits as its factorization.

225855172379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584000, while the sum is 56.

The spelling of 225855172379 in words is "two hundred twenty-five billion, eight hundred fifty-five million, one hundred seventy-two thousand, three hundred seventy-nine".