1225156526322 has 64 divisors (see below), whose sum is σ = 2663942670720. Its totient is φ = 374391673344.

The previous prime is 1225156526317. The next prime is 1225156526323. The reversal of 1225156526322 is 2236256515221.

It is not an unprimeable number, because it can be changed into a prime (1225156526323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 947793 + ... + 1829924.

It is an arithmetic number, because the mean of its divisors is an integer number (41624104230).

Almost surely, 2^{1225156526322} is an apocalyptic number.

1225156526322 is an abundant number, since it is smaller than the sum of its proper divisors (1438786144398).

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

1225156526322 is a wasteful number, since it uses less digits than its factorization.

1225156526322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777867.

The product of its digits is 432000, while the sum is 42.

The spelling of 1225156526322 in words is "one trillion, two hundred twenty-five billion, one hundred fifty-six million, five hundred twenty-six thousand, three hundred twenty-two".