1225502335620 has 72 divisors (see below), whose sum is σ = 3717490696920. Its totient is φ = 326788876800.

The previous prime is 1225502335553. The next prime is 1225502335637. The reversal of 1225502335620 is 265332055221.

1225502335620 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 5 + 0 + 23 + 3 + 5 + 620 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15533135424 + 1209969200196 = 124632^2 + 1099986^2 .

It is a super-2 number, since 2×1225502335620² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5655270 + ... + 5867970.

It is an arithmetic number, because the mean of its divisors is an integer number (51631815235).

Almost surely, 2^{1225502335620} is an apocalyptic number.

1225502335620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225502335620 is an abundant number, since it is smaller than the sum of its proper divisors (2491988361300).

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

1225502335620 is a wasteful number, since it uses less digits than its factorization.

1225502335620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244725 (or 244720 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 1225502335620 in words is "one trillion, two hundred twenty-five billion, five hundred two million, three hundred thirty-five thousand, six hundred twenty".