125287866 has 48 divisors (see below), whose sum is σ = 301747680. Its totient is φ = 37246560.

The previous prime is 125287849. The next prime is 125287879. The reversal of 125287866 is 668782521.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4525 + ... + 16463.

It is an arithmetic number, because the mean of its divisors is an integer number (6286410).

Almost surely, 2^125287866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125287866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150873840).

125287866 is an abundant number, since it is smaller than the sum of its proper divisors (176459814).

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

125287866 is a wasteful number, since it uses less digits than its factorization.

125287866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12011 (or 12008 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 125287866 is about 11193.2062430744. The cubic root of 125287866 is about 500.3835270721.

The spelling of 125287866 in words is "one hundred twenty-five million, two hundred eighty-seven thousand, eight hundred sixty-six".