125216784 has 240 divisors, whose sum is σ = 456827904. Its totient is φ = 31046400.

The previous prime is 125216779. The next prime is 125216797. The reversal of 125216784 is 487612521.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 254779 + ... + 255269.

Almost surely, 2^125216784 is an apocalyptic number.

125216784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125216784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228413952).

125216784 is an abundant number, since it is smaller than the sum of its proper divisors (331611120).

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

125216784 is a wasteful number, since it uses less digits than its factorization.

125216784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 537 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 125216784 is about 11190.0305629609. The cubic root of 125216784 is about 500.2888783997.

The spelling of 125216784 in words is "one hundred twenty-five million, two hundred sixteen thousand, seven hundred eighty-four".