125287764 has 24 divisors (see below), whose sum is σ = 334100928. Its totient is φ = 35796480.

The previous prime is 125287763. The next prime is 125287777. The reversal of 125287764 is 467782521.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125287763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745677 + ... + 745844.

It is an arithmetic number, because the mean of its divisors is an integer number (13920872).

Almost surely, 2^125287764 is an apocalyptic number.

125287764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

125287764 is an abundant number, since it is smaller than the sum of its proper divisors (208813164).

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

125287764 is a wasteful number, since it uses less digits than its factorization.

125287764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491535 (or 1491533 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 125287764 is about 11193.2016867382. The cubic root of 125287764 is about 500.3833912804.

The spelling of 125287764 in words is "one hundred twenty-five million, two hundred eighty-seven thousand, seven hundred sixty-four".