2115222225 has 24 divisors (see below), whose sum is σ = 3609983232. Its totient is φ = 1091726400.

The previous prime is 2115222223. The next prime is 2115222233. The reversal of 2115222225 is 5222225112.

It is not a de Polignac number, because 2115222225 - 2¹ = 2115222223 is a prime.

It is a super-2 number, since 2×2115222225² = 8948330122267901250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2115222195 and 2115222204.

It is not an unprimeable number, because it can be changed into a prime (2115222223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 452562 + ... + 457211.

It is an arithmetic number, because the mean of its divisors is an integer number (150415968).

Almost surely, 2^2115222225 is an apocalyptic number.

2115222225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2115222225 is a deficient number, since it is larger than the sum of its proper divisors (1494761007).

2115222225 is a wasteful number, since it uses less digits than its factorization.

2115222225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909817 (or 909812 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 2115222225 is about 45991.5451469072. The cubic root of 2115222225 is about 1283.6658876552.

Adding to 2115222225 its reverse (5222225112), we get a palindrome (7337447337).

The spelling of 2115222225 in words is "two billion, one hundred fifteen million, two hundred twenty-two thousand, two hundred twenty-five".