7221534250 has 288 divisors, whose sum is σ = 17562624768. Its totient is φ = 2212056000.

The previous prime is 7221534241. The next prime is 7221534301. The reversal of 7221534250 is 524351227.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 101711715 + ... + 101711785.

It is an arithmetic number, because the mean of its divisors is an integer number (60981336).

Almost surely, 2^7221534250 is an apocalyptic number.

7221534250 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7221534250 is an abundant number, since it is smaller than the sum of its proper divisors (10341090518).

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

7221534250 is a wasteful number, since it uses less digits than its factorization.

7221534250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 7221534250 is about 84979.6107898830. The cubic root of 7221534250 is about 1932.9019540586.

Adding to 7221534250 its reverse (524351227), we get a palindrome (7745885477).

The spelling of 7221534250 in words is "seven billion, two hundred twenty-one million, five hundred thirty-four thousand, two hundred fifty".