12525191056 has 75 divisors (see below), whose sum is σ = 28360133403. Its totient is φ = 5358538080.

The previous prime is 12525191017. The next prime is 12525191083. The reversal of 12525191056 is 65019152521.

It is a happy number.

The square root of 12525191056 is 111916.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 21935251 + ... + 21935821.

Almost surely, 2^12525191056 is an apocalyptic number.

12525191056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12525191056 is the 111916-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12525191056

12525191056 is an abundant number, since it is smaller than the sum of its proper divisors (15834942347).

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

12525191056 is an frugal number, since it uses more digits than its factorization.

12525191056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 12525191056 in words is "twelve billion, five hundred twenty-five million, one hundred ninety-one thousand, fifty-six".