1225501200164 has 48 divisors (see below), whose sum is σ = 2309291099136. Its totient is φ = 566972313600.

The previous prime is 1225501200139. The next prime is 1225501200167. The reversal of 1225501200164 is 4610021055221.

It is not an unprimeable number, because it can be changed into a prime (1225501200167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344749 + ... + 2063819.

It is an arithmetic number, because the mean of its divisors is an integer number (48110231232).

Almost surely, 2^{1225501200164} is an apocalyptic number.

It is an amenable number.

1225501200164 is a deficient number, since it is larger than the sum of its proper divisors (1083789898972).

1225501200164 is a wasteful number, since it uses less digits than its factorization.

1225501200164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719516 (or 719514 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1225501200164 its reverse (4610021055221), we get a palindrome (5835522255385).

The spelling of 1225501200164 in words is "one trillion, two hundred twenty-five billion, five hundred one million, two hundred thousand, one hundred sixty-four".