402220255 has 8 divisors (see below), whose sum is σ = 511056432. Its totient is φ = 302848128.

The previous prime is 402220213. The next prime is 402220261. The reversal of 402220255 is 552022204.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 402220255 - 2¹¹ = 402218207 is a prime.

It is a super-2 number, since 2×402220255² = 323562267064530050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 2365917 + ... + 2366086.

It is an arithmetic number, because the mean of its divisors is an integer number (63882054).

Almost surely, 2^402220255 is an apocalyptic number.

402220255 is a deficient number, since it is larger than the sum of its proper divisors (108836177).

402220255 is a wasteful number, since it uses less digits than its factorization.

402220255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732025.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 402220255 is about 20055.4295640856. The cubic root of 402220255 is about 738.1670334043.

Adding to 402220255 its reverse (552022204), we get a palindrome (954242459).

The spelling of 402220255 in words is "four hundred two million, two hundred twenty thousand, two hundred fifty-five".