55215423025 has 12 divisors (see below), whose sum is σ = 78248142592. Its totient is φ = 37862004240.

The previous prime is 55215423013. The next prime is 55215423031. The reversal of 55215423025 is 52032451255.

It is not a de Polignac number, because 55215423025 - 2²¹ = 55213325873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157758177 + ... + 157758526.

Almost surely, 2^55215423025 is an apocalyptic number.

It is an amenable number.

55215423025 is a deficient number, since it is larger than the sum of its proper divisors (23032719567).

55215423025 is a wasteful number, since it uses less digits than its factorization.

55215423025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315516720 (or 315516715 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 55215423025 in words is "fifty-five billion, two hundred fifteen million, four hundred twenty-three thousand, twenty-five".