125784823428 has 96 divisors (see below), whose sum is σ = 356172096000. Its totient is φ = 38071931040.

The previous prime is 125784823427. The next prime is 125784823523. The reversal of 125784823428 is 824328487521.

It is a happy number.

125784823428 is a `hidden beast` number, since 1 + 2 + 578 + 4 + 8 + 23 + 42 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (125784823427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 958863 + ... + 1082121.

It is an arithmetic number, because the mean of its divisors is an integer number (3710126000).

Almost surely, 2^125784823428 is an apocalyptic number.

125784823428 is a gapful number since it is divisible by the number (18) 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 125784823428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178086048000).

125784823428 is an abundant number, since it is smaller than the sum of its proper divisors (230387272572).

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

125784823428 is a wasteful number, since it uses less digits than its factorization.

125784823428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124142 (or 124134 counting only the distinct ones).

The product of its digits is 6881280, while the sum is 54.

The spelling of 125784823428 in words is "one hundred twenty-five billion, seven hundred eighty-four million, eight hundred twenty-three thousand, four hundred twenty-eight".