125780634 has 64 divisors (see below), whose sum is σ = 320889600. Its totient is φ = 35774784.

The previous prime is 125780621. The next prime is 125780651. The reversal of 125780634 is 436087521.

125780634 is a `hidden beast` number, since 12 + 5 + 7 + 8 + 0 + 634 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101064 + ... + 102300.

It is an arithmetic number, because the mean of its divisors is an integer number (5013900).

Almost surely, 2^125780634 is an apocalyptic number.

125780634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125780634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160444800).

125780634 is an abundant number, since it is smaller than the sum of its proper divisors (195108966).

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

125780634 is a wasteful number, since it uses less digits than its factorization.

125780634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 125780634 is about 11215.1965653750. The cubic root of 125780634 is about 501.0386861016.

The spelling of 125780634 in words is "one hundred twenty-five million, seven hundred eighty thousand, six hundred thirty-four".