1225120050 has 216 divisors, whose sum is σ = 4177781712. Its totient is φ = 254520000.

The previous prime is 1225120049. The next prime is 1225120067. The reversal of 1225120050 is 500215221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 240025 + ... + 245075.

It is an arithmetic number, because the mean of its divisors is an integer number (19341582).

Almost surely, 2^1225120050 is an apocalyptic number.

1225120050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225120050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2088890856).

1225120050 is an abundant number, since it is smaller than the sum of its proper divisors (2952661662).

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

1225120050 is a wasteful number, since it uses less digits than its factorization.

1225120050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5094 (or 5079 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1225120050 is about 35001.7149579846. The cubic root of 1225120050 is about 1070.0224323477.

Adding to 1225120050 its reverse (500215221), we get a palindrome (1725335271).

The spelling of 1225120050 in words is "one billion, two hundred twenty-five million, one hundred twenty thousand, fifty".