216125655 has 8 divisors (see below), whose sum is σ = 345801072. Its totient is φ = 115267008.

The previous prime is 216125653. The next prime is 216125669. The reversal of 216125655 is 556521612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216125655 - 2¹ = 216125653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216125653) 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, 7204174 + ... + 7204203.

It is an arithmetic number, because the mean of its divisors is an integer number (43225134).

Almost surely, 2^216125655 is an apocalyptic number.

216125655 is a deficient number, since it is larger than the sum of its proper divisors (129675417).

216125655 is a wasteful number, since it uses less digits than its factorization.

216125655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14408385.

The product of its digits is 18000, while the sum is 33.

The square root of 216125655 is about 14701.2127050798. The cubic root of 216125655 is about 600.1163246684.

The spelling of 216125655 in words is "two hundred sixteen million, one hundred twenty-five thousand, six hundred fifty-five".