225916818699 has 16 divisors (see below), whose sum is σ = 353883688704. Its totient is φ = 126387031200.

The previous prime is 225916818689. The next prime is 225916818707. The reversal of 225916818699 is 996818619522.

It is a happy number.

It is not a de Polignac number, because 225916818699 - 2⁵ = 225916818667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225916818689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263305887 + ... + 263306744.

It is an arithmetic number, because the mean of its divisors is an integer number (22117730544).

Almost surely, 2^225916818699 is an apocalyptic number.

225916818699 is a deficient number, since it is larger than the sum of its proper divisors (127966870005).

225916818699 is a wasteful number, since it uses less digits than its factorization.

225916818699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526612658.

The product of its digits is 33592320, while the sum is 66.

The spelling of 225916818699 in words is "two hundred twenty-five billion, nine hundred sixteen million, eight hundred eighteen thousand, six hundred ninety-nine".