216425260 has 48 divisors (see below), whose sum is σ = 485372160. Its totient is φ = 80881920.

The previous prime is 216425233. The next prime is 216425263. The reversal of 216425260 is 62524612.

216425260 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216425263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11962 + ... + 23998.

It is an arithmetic number, because the mean of its divisors is an integer number (10111920).

Almost surely, 2^216425260 is an apocalyptic number.

216425260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216425260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242686080).

216425260 is an abundant number, since it is smaller than the sum of its proper divisors (268946900).

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

216425260 is a wasteful number, since it uses less digits than its factorization.

216425260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12106 (or 12104 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 216425260 is about 14711.3989817420. The cubic root of 216425260 is about 600.3935011309.

Adding to 216425260 its reverse (62524612), we get a palindrome (278949872).

The spelling of 216425260 in words is "two hundred sixteen million, four hundred twenty-five thousand, two hundred sixty".