10505421425 has 12 divisors (see below), whose sum is σ = 13034635596. Its totient is φ = 8399232000.

The previous prime is 10505421379. The next prime is 10505421497. The reversal of 10505421425 is 52412450501.

It can be written as a sum of positive squares in 6 ways, for example, as 3058421809 + 7446999616 = 55303^2 + 86296^2 .

It is not a de Polignac number, because 10505421425 - 2¹⁴ = 10505405041 is a prime.

It is a super-2 number, since 2×10505421425² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 85376 + ... + 168225.

It is an arithmetic number, because the mean of its divisors is an integer number (1086219633).

Almost surely, 2^10505421425 is an apocalyptic number.

It is an amenable number.

10505421425 is a deficient number, since it is larger than the sum of its proper divisors (2529214171).

10505421425 is a wasteful number, since it uses less digits than its factorization.

10505421425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255268 (or 255263 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 10505421425 its reverse (52412450501), we get a palindrome (62917871926).

The spelling of 10505421425 in words is "ten billion, five hundred five million, four hundred twenty-one thousand, four hundred twenty-five".