15250122020 has 144 divisors (see below), whose sum is σ = 39497859072. Its totient is φ = 4922830080.

The previous prime is 15250121993. The next prime is 15250122049. The reversal of 15250122020 is 2022105251.

It is a happy number.

15250122020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 15250121983 and 15250122001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1117277 + ... + 1130843.

It is an arithmetic number, because the mean of its divisors is an integer number (274290688).

Almost surely, 2^15250122020 is an apocalyptic number.

15250122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15250122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19748929536).

15250122020 is an abundant number, since it is smaller than the sum of its proper divisors (24247737052).

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

15250122020 is a wasteful number, since it uses less digits than its factorization.

15250122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13658 (or 13649 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 15250122020 its reverse (2022105251), we get a palindrome (17272227271).

The spelling of 15250122020 in words is "fifteen billion, two hundred fifty million, one hundred twenty-two thousand, twenty".