10505125278 has 16 divisors (see below), whose sum is σ = 23344722960. Its totient is φ = 3501708408.

The previous prime is 10505125259. The next prime is 10505125307. The reversal of 10505125278 is 87252150501.

10505125278 is a `hidden beast` number, since 1 + 0 + 505 + 125 + 27 + 8 = 666.

It is a super-2 number, since 2×10505125278² (a number of 21 digits) contains 22 as substring.

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, 97269625 + ... + 97269732.

It is an arithmetic number, because the mean of its divisors is an integer number (1459045185).

Almost surely, 2^10505125278 is an apocalyptic number.

10505125278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10505125278 is an abundant number, since it is smaller than the sum of its proper divisors (12839597682).

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

10505125278 is a wasteful number, since it uses less digits than its factorization.

10505125278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194539368 (or 194539362 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 36.

Adding to 10505125278 its reverse (87252150501), we get a palindrome (97757275779).

The spelling of 10505125278 in words is "ten billion, five hundred five million, one hundred twenty-five thousand, two hundred seventy-eight".