125011956366 has 80 divisors (see below), whose sum is σ = 305746507440. Its totient is φ = 37862363520.

The previous prime is 125011956337. The next prime is 125011956371. The reversal of 125011956366 is 663659110521.

125011956366 is a `hidden beast` number, since 1 + 2 + 5 + 0 + 1 + 1 + 9 + 5 + 636 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3541090 + ... + 3576218.

It is an arithmetic number, because the mean of its divisors is an integer number (3821831343).

Almost surely, 2^125011956366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125011956366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152873253720).

125011956366 is an abundant number, since it is smaller than the sum of its proper divisors (180734551074).

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

125011956366 is a wasteful number, since it uses less digits than its factorization.

125011956366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37151 (or 37142 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 125011956366 in words is "one hundred twenty-five billion, eleven million, nine hundred fifty-six thousand, three hundred sixty-six".