215025555312 has 40 divisors (see below), whose sum is σ = 617202984080. Its totient is φ = 71675184960.

The previous prime is 215025555307. The next prime is 215025555313. The reversal of 215025555312 is 213555520512.

215025555312 is a `hidden beast` number, since 2 + 1 + 50 + 2 + 55 + 553 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215025555313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248871739 + ... + 248872602.

It is an arithmetic number, because the mean of its divisors is an integer number (15430074602).

Almost surely, 2^215025555312 is an apocalyptic number.

It is an amenable number.

215025555312 is an abundant number, since it is smaller than the sum of its proper divisors (402177428768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215025555312 is a wasteful number, since it uses less digits than its factorization.

215025555312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497744358 (or 497744346 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 215025555312 in words is "two hundred fifteen billion, twenty-five million, five hundred fifty-five thousand, three hundred twelve".