2147221825 has 48 divisors (see below), whose sum is σ = 3214397440. Its totient is φ = 1389960000.

The previous prime is 2147221757. The next prime is 2147221841. The reversal of 2147221825 is 5281227412.

It is not a de Polignac number, because 2147221825 - 2⁹ = 2147221313 is a prime.

It is a super-2 number, since 2×2147221825² = 9221123131512661250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1099600 + ... + 1101550.

Almost surely, 2^2147221825 is an apocalyptic number.

2147221825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2147221825 is a deficient number, since it is larger than the sum of its proper divisors (1067175615).

2147221825 is a wasteful number, since it uses less digits than its factorization.

2147221825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318 (or 2313 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 2147221825 is about 46338.1249620655. The cubic root of 2147221825 is about 1290.1067205341.

The spelling of 2147221825 in words is "two billion, one hundred forty-seven million, two hundred twenty-one thousand, eight hundred twenty-five".