1220625306215 has 48 divisors (see below), whose sum is σ = 1737061666560. Its totient is φ = 820725534720.

The previous prime is 1220625306167. The next prime is 1220625306227. The reversal of 1220625306215 is 5126035260221.

It is not a de Polignac number, because 1220625306215 - 2⁶ = 1220625306151 is a prime.

It is a super-2 number, since 2×1220625306215² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22813895 + ... + 22867335.

It is an arithmetic number, because the mean of its divisors is an integer number (36188784720).

Almost surely, 2^{1220625306215} is an apocalyptic number.

1220625306215 is a deficient number, since it is larger than the sum of its proper divisors (516436360345).

1220625306215 is a wasteful number, since it uses less digits than its factorization.

1220625306215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55272 (or 55265 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 1220625306215 in words is "one trillion, two hundred twenty billion, six hundred twenty-five million, three hundred six thousand, two hundred fifteen".