15530222250 has 48 divisors (see below), whose sum is σ = 41993727048. Its totient is φ = 4141392000.

The previous prime is 15530222243. The next prime is 15530222251. The reversal of 15530222250 is 5222203551.

It can be written as a sum of positive squares in 4 ways, for example, as 869129361 + 14661092889 = 29481^2 + 121083^2 .

It is not an unprimeable number, because it can be changed into a prime (15530222251) 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, 3448911 + ... + 3453410.

Almost surely, 2^15530222250 is an apocalyptic number.

15530222250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15530222250 is an abundant number, since it is smaller than the sum of its proper divisors (26463504798).

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

15530222250 is a wasteful number, since it uses less digits than its factorization.

15530222250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902344 (or 6902331 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 15530222250 in words is "fifteen billion, five hundred thirty million, two hundred twenty-two thousand, two hundred fifty".