2223655216425 has 72 divisors (see below), whose sum is σ = 4439049320160. Its totient is φ = 1057440960000.

The previous prime is 2223655216397. The next prime is 2223655216451. The reversal of 2223655216425 is 5246125563222.

It is a happy number.

2223655216425 is a `hidden beast` number, since 2 + 2 + 2 + 3 + 6 + 5 + 5 + 216 + 425 = 666.

It is not a de Polignac number, because 2223655216425 - 2⁹ = 2223655215913 is a prime.

It is a super-2 number, since 2×2223655216425² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15225951 + ... + 15371300.

It is an arithmetic number, because the mean of its divisors is an integer number (61653462780).

Almost surely, 2^{2223655216425} is an apocalyptic number.

2223655216425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2223655216425 is a deficient number, since it is larger than the sum of its proper divisors (2215394103735).

2223655216425 is a wasteful number, since it uses less digits than its factorization.

2223655216425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30597303 (or 30597295 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 45.

The spelling of 2223655216425 in words is "two trillion, two hundred twenty-three billion, six hundred fifty-five million, two hundred sixteen thousand, four hundred twenty-five".