225420555215 has 8 divisors (see below), whose sum is σ = 282265738848. Its totient is φ = 172495729120.

The previous prime is 225420555181. The next prime is 225420555229. The reversal of 225420555215 is 512555024522.

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

It is not a de Polignac number, because 225420555215 - 2²⁴ = 225403777999 is a prime.

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, 980089256 + ... + 980089485.

It is an arithmetic number, because the mean of its divisors is an integer number (35283217356).

Almost surely, 2^225420555215 is an apocalyptic number.

225420555215 is a deficient number, since it is larger than the sum of its proper divisors (56845183633).

225420555215 is a wasteful number, since it uses less digits than its factorization.

225420555215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960178769.

The product of its (nonzero) digits is 200000, while the sum is 38.

Adding to 225420555215 its reverse (512555024522), we get a palindrome (737975579737).

The spelling of 225420555215 in words is "two hundred twenty-five billion, four hundred twenty million, five hundred fifty-five thousand, two hundred fifteen".