215025514255 has 16 divisors (see below), whose sum is σ = 258732849024. Its totient is φ = 171552579840.

The previous prime is 215025514183. The next prime is 215025514261. The reversal of 215025514255 is 552415520512.

It is not a de Polignac number, because 215025514255 - 2⁹ = 215025513743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5750299 + ... + 5787571.

It is an arithmetic number, because the mean of its divisors is an integer number (16170803064).

Almost surely, 2^215025514255 is an apocalyptic number.

215025514255 is a deficient number, since it is larger than the sum of its proper divisors (43707334769).

215025514255 is a wasteful number, since it uses less digits than its factorization.

215025514255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40386.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 215025514255 in words is "two hundred fifteen billion, twenty-five million, five hundred fourteen thousand, two hundred fifty-five".