2251361035250 has 64 divisors (see below), whose sum is σ = 4266211203072. Its totient is φ = 889509760000.

The previous prime is 2251361035181. The next prime is 2251361035289. The reversal of 2251361035250 is 525301631522.

It is a super-2 number, since 2×2251361035250² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2251361035250.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144764975 + ... + 144780525.

It is an arithmetic number, because the mean of its divisors is an integer number (66659550048).

Almost surely, 2^{2251361035250} is an apocalyptic number.

2251361035250 is a deficient number, since it is larger than the sum of its proper divisors (2014850167822).

2251361035250 is a wasteful number, since it uses less digits than its factorization.

2251361035250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22628 (or 22618 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 2251361035250 its reverse (525301631522), we get a palindrome (2776662666772).

The spelling of 2251361035250 in words is "two trillion, two hundred fifty-one billion, three hundred sixty-one million, thirty-five thousand, two hundred fifty".