125966859552 has 72 divisors (see below), whose sum is σ = 358265391120. Its totient is φ = 41983428480.

The previous prime is 125966859541. The next prime is 125966859553. The reversal of 125966859552 is 255958669521.

125966859552 is a `hidden beast` number, since 1 + 25 + 9 + 6 + 6 + 8 + 59 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 125966859552.

It is not an unprimeable number, because it can be changed into a prime (125966859553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2570899 + ... + 2619437.

It is an arithmetic number, because the mean of its divisors is an integer number (4975908210).

Almost surely, 2^125966859552 is an apocalyptic number.

125966859552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125966859552 is an abundant number, since it is smaller than the sum of its proper divisors (232298531568).

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

125966859552 is a wasteful number, since it uses less digits than its factorization.

125966859552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57566 (or 57555 counting only the distinct ones).

The product of its digits is 58320000, while the sum is 63.

The spelling of 125966859552 in words is "one hundred twenty-five billion, nine hundred sixty-six million, eight hundred fifty-nine thousand, five hundred fifty-two".