1247244525220 has 12 divisors (see below), whose sum is σ = 2619213503004. Its totient is φ = 498897810080.

The previous prime is 1247244525217. The next prime is 1247244525223. The reversal of 1247244525220 is 225254427421.

It is an interprime number because it is at equal distance from previous prime (1247244525217) and next prime (1247244525223).

It can be written as a sum of positive squares in 2 ways, for example, as 255599002624 + 991645522596 = 505568^2 + 995814^2 .

It is not an unprimeable number, because it can be changed into a prime (1247244525223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31181113111 + ... + 31181113150.

It is an arithmetic number, because the mean of its divisors is an integer number (218267791917).

Almost surely, 2^{1247244525220} is an apocalyptic number.

1247244525220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1247244525220 is an abundant number, since it is smaller than the sum of its proper divisors (1371968977784).

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

1247244525220 is a wasteful number, since it uses less digits than its factorization.

1247244525220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62362226270 (or 62362226268 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 40.

The spelling of 1247244525220 in words is "one trillion, two hundred forty-seven billion, two hundred forty-four million, five hundred twenty-five thousand, two hundred twenty".