225187262781522 has 8 divisors (see below), whose sum is σ = 450374525563056. Its totient is φ = 75062420927172.

The previous prime is 225187262781449. The next prime is 225187262781529.

It is a happy number.

225187262781522 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

225187262781522 is an admirable number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (225187262781529) 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, 18765605231788 + ... + 18765605231799.

It is an arithmetic number, because the mean of its divisors is an integer number (56296815695382).

Almost surely, 2^{225187262781522} is an apocalyptic number.

225187262781522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

225187262781522 is a wasteful number, since it uses less digits than its factorization.

225187262781522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37531210463592.

The product of its digits is 30105600, while the sum is 60.

The spelling of 225187262781522 in words is "two hundred twenty-five trillion, one hundred eighty-seven billion, two hundred sixty-two million, seven hundred eighty-one thousand, five hundred twenty-two".