55123221425 has 12 divisors (see below), whose sum is σ = 68361148416. Its totient is φ = 44093187600.

The previous prime is 55123221407. The next prime is 55123221427. The reversal of 55123221425 is 52412232155.

It is a de Polignac number, because none of the positive numbers 2^k-55123221425 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55123221391 and 55123221400.

It is not an unprimeable number, because it can be changed into a prime (55123221427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80660 + ... + 341690.

It is an arithmetic number, because the mean of its divisors is an integer number (5696762368).

Almost surely, 2^55123221425 is an apocalyptic number.

It is an amenable number.

55123221425 is a deficient number, since it is larger than the sum of its proper divisors (13237926991).

55123221425 is a wasteful number, since it uses less digits than its factorization.

55123221425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269488 (or 269483 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The spelling of 55123221425 in words is "fifty-five billion, one hundred twenty-three million, two hundred twenty-one thousand, four hundred twenty-five".