5221991225 has 12 divisors (see below), whose sum is σ = 7063930320. Its totient is φ = 3797811600.

The previous prime is 5221991219. The next prime is 5221991233.

It is a happy number.

5221991225 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5221991225 - 2⁶ = 5221991161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9494255 + ... + 9494804.

It is an arithmetic number, because the mean of its divisors is an integer number (588660860).

Almost surely, 2^5221991225 is an apocalyptic number.

5221991225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5221991225 is a deficient number, since it is larger than the sum of its proper divisors (1841939095).

5221991225 is a wasteful number, since it uses less digits than its factorization.

5221991225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18989080 (or 18989075 counting only the distinct ones).

The product of its digits is 32400, while the sum is 38.

The square root of 5221991225 is about 72263.3463451562. The cubic root of 5221991225 is about 1734.9170398866.

The spelling of 5221991225 in words is "five billion, two hundred twenty-one million, nine hundred ninety-one thousand, two hundred twenty-five".