2221425156 has 48 divisors (see below), whose sum is σ = 5665282560. Its totient is φ = 674434560.

The previous prime is 2221425131. The next prime is 2221425161. The reversal of 2221425156 is 6515241222.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169311 + ... + 181958.

It is an arithmetic number, because the mean of its divisors is an integer number (118026720).

Almost surely, 2^2221425156 is an apocalyptic number.

It is an amenable number.

2221425156 is an abundant number, since it is smaller than the sum of its proper divisors (3443857404).

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

2221425156 is a wasteful number, since it uses less digits than its factorization.

2221425156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351324 (or 351322 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 2221425156 is about 47131.9971569209. The cubic root of 2221425156 is about 1304.7998412940.

Adding to 2221425156 its reverse (6515241222), we get a palindrome (8736666378).

The spelling of 2221425156 in words is "two billion, two hundred twenty-one million, four hundred twenty-five thousand, one hundred fifty-six".