125203530 has 64 divisors (see below), whose sum is σ = 312035328. Its totient is φ = 32128320.

The previous prime is 125203501. The next prime is 125203531. The reversal of 125203530 is 35302521.

It is a junction number, because it is equal to n+sod(n) for n = 125203497 and 125203506.

It is not an unprimeable number, because it can be changed into a prime (125203531) 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, 90907 + ... + 92273.

It is an arithmetic number, because the mean of its divisors is an integer number (4875552).

Almost surely, 2^125203530 is an apocalyptic number.

125203530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125203530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156017664).

125203530 is an abundant number, since it is smaller than the sum of its proper divisors (186831798).

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

125203530 is a wasteful number, since it uses less digits than its factorization.

125203530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 125203530 is about 11189.4383237051. The cubic root of 125203530 is about 500.2712261794.

The spelling of 125203530 in words is "one hundred twenty-five million, two hundred three thousand, five hundred thirty".