225326637201 has 4 divisors (see below), whose sum is σ = 300435516272. Its totient is φ = 150217758132.

The previous prime is 225326637197. The next prime is 225326637223. The reversal of 225326637201 is 102736623522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 225326637201 - 2² = 225326637197 is a prime.

It is a super-2 number, since 2×225326637201² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225326637201.

It is not an unprimeable number, because it can be changed into a prime (225326637301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37554439531 + ... + 37554439536.

It is an arithmetic number, because the mean of its divisors is an integer number (75108879068).

Almost surely, 2^225326637201 is an apocalyptic number.

It is an amenable number.

225326637201 is a deficient number, since it is larger than the sum of its proper divisors (75108879071).

225326637201 is an equidigital number, since it uses as much as digits as its factorization.

225326637201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75108879070.

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 225326637201 in words is "two hundred twenty-five billion, three hundred twenty-six million, six hundred thirty-seven thousand, two hundred one".