216425355 has 8 divisors (see below), whose sum is σ = 346280592. Its totient is φ = 115426848.

The previous prime is 216425327. The next prime is 216425389. The reversal of 216425355 is 553524612.

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

It is not a de Polignac number, because 216425355 - 2⁵ = 216425323 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7214164 + ... + 7214193.

It is an arithmetic number, because the mean of its divisors is an integer number (43285074).

Almost surely, 2^216425355 is an apocalyptic number.

216425355 is a deficient number, since it is larger than the sum of its proper divisors (129855237).

216425355 is a wasteful number, since it uses less digits than its factorization.

216425355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14428365.

The product of its digits is 36000, while the sum is 33.

The square root of 216425355 is about 14711.4022105304. The cubic root of 216425355 is about 600.3935889786.

Adding to 216425355 its reverse (553524612), we get a palindrome (769949967).

The spelling of 216425355 in words is "two hundred sixteen million, four hundred twenty-five thousand, three hundred fifty-five".