1252421532245 has 8 divisors (see below), whose sum is σ = 1618513980216. Its totient is φ = 924865131456.

The previous prime is 1252421532169. The next prime is 1252421532251. The reversal of 1252421532245 is 5422351242521.

It can be written as a sum of positive squares in 4 ways, for example, as 102978093604 + 1149443438641 = 320902^2 + 1072121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252421532245 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1252421532199 and 1252421532208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9634011722 + ... + 9634011851.

It is an arithmetic number, because the mean of its divisors is an integer number (202314247527).

Almost surely, 2^{1252421532245} is an apocalyptic number.

It is an amenable number.

1252421532245 is a deficient number, since it is larger than the sum of its proper divisors (366092447971).

1252421532245 is a wasteful number, since it uses less digits than its factorization.

1252421532245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19268023591.

The product of its digits is 192000, while the sum is 38.

Adding to 1252421532245 its reverse (5422351242521), we get a palindrome (6674772774766).

The spelling of 1252421532245 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-one million, five hundred thirty-two thousand, two hundred forty-five".