1220625426623 has 2 divisors, whose sum is σ = 1220625426624. Its totient is φ = 1220625426622.

The previous prime is 1220625426619. The next prime is 1220625426661. The reversal of 1220625426623 is 3266245260221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220625426623 - 2² = 1220625426619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220625423623) by changing a digit.

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 as a sum of consecutive naturals, namely, 610312713311 + 610312713312.

It is an arithmetic number, because the mean of its divisors is an integer number (610312713312).

Almost surely, 2^{1220625426623} is an apocalyptic number.

1220625426623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220625426623 is an equidigital number, since it uses as much as digits as its factorization.

1220625426623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 1220625426623 in words is "one trillion, two hundred twenty billion, six hundred twenty-five million, four hundred twenty-six thousand, six hundred twenty-three".