225691211250 has 150 divisors (see below), whose sum is σ = 632365632129. Its totient is φ = 60144012000.

The previous prime is 225691211237. The next prime is 225691211311. The reversal of 225691211250 is 52112196522.

225691211250 is a `hidden beast` number, since 22 + 569 + 1 + 21 + 1 + 2 + 50 = 666.

225691211250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4225910049 + 221465301201 = 65007^2 + 470601^2 .

It is a tau number, because it is divible by the number of its divisors (150).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=335925.

It is an unprimeable number.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 151165504 + ... + 151166996.

Almost surely, 2^225691211250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225691211250

225691211250 is an abundant number, since it is smaller than the sum of its proper divisors (406674420879).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225691211250 is an frugal number, since it uses more digits than its factorization.

225691211250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 225691211250 in words is "two hundred twenty-five billion, six hundred ninety-one million, two hundred eleven thousand, two hundred fifty".