125125530 has 16 divisors (see below), whose sum is σ = 300301344. Its totient is φ = 33366800.

The previous prime is 125125487. The next prime is 125125531. The reversal of 125125530 is 35521521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 125125530.

It is not an unprimeable number, because it can be changed into a prime (125125531) 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, 2085396 + ... + 2085455.

It is an arithmetic number, because the mean of its divisors is an integer number (18768834).

Almost surely, 2^125125530 is an apocalyptic number.

125125530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125125530 is an abundant number, since it is smaller than the sum of its proper divisors (175175814).

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

125125530 is a wasteful number, since it uses less digits than its factorization.

125125530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170861.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 125125530 is about 11185.9523510517. The cubic root of 125125530 is about 500.1673173369.

The spelling of 125125530 in words is "one hundred twenty-five million, one hundred twenty-five thousand, five hundred thirty".