1220545531325 has 24 divisors (see below), whose sum is σ = 1527545564160. Its totient is φ = 967361745600.

The previous prime is 1220545531319. The next prime is 1220545531333. The reversal of 1220545531325 is 5231355450221.

It is not a de Polignac number, because 1220545531325 - 2²⁰ = 1220544482749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27901220 + ... + 27944930.

It is an arithmetic number, because the mean of its divisors is an integer number (63647731840).

Almost surely, 2^{1220545531325} is an apocalyptic number.

It is an amenable number.

1220545531325 is a deficient number, since it is larger than the sum of its proper divisors (307000032835).

1220545531325 is a wasteful number, since it uses less digits than its factorization.

1220545531325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54077 (or 54072 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 1220545531325 in words is "one trillion, two hundred twenty billion, five hundred forty-five million, five hundred thirty-one thousand, three hundred twenty-five".