1275475250220 has 288 divisors, whose sum is σ = 3863410387200. Its totient is φ = 314079833088.

The previous prime is 1275475250201. The next prime is 1275475250221. The reversal of 1275475250220 is 220525745721.

It is a super-2 number, since 2×1275475250220² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1275475250221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 110148391 + ... + 110159969.

It is an arithmetic number, because the mean of its divisors is an integer number (13414619400).

Almost surely, 2^{1275475250220} is an apocalyptic number.

1275475250220 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 1275475250220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1931705193600).

1275475250220 is an abundant number, since it is smaller than the sum of its proper divisors (2587935136980).

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

1275475250220 is a wasteful number, since it uses less digits than its factorization.

1275475250220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11745 (or 11714 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 42.

The spelling of 1275475250220 in words is "one trillion, two hundred seventy-five billion, four hundred seventy-five million, two hundred fifty thousand, two hundred twenty".