125591530 has 16 divisors (see below), whose sum is σ = 229897440. Its totient is φ = 49384912.

The previous prime is 125591513. The next prime is 125591537. The reversal of 125591530 is 35195521.

It is a junction number, because it is equal to n+sod(n) for n = 125591492 and 125591501.

It is not an unprimeable number, because it can be changed into a prime (125591537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105844 + ... + 107023.

It is an arithmetic number, because the mean of its divisors is an integer number (14368590).

Almost surely, 2^125591530 is an apocalyptic number.

125591530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125591530 is a deficient number, since it is larger than the sum of its proper divisors (104305910).

125591530 is a wasteful number, since it uses less digits than its factorization.

125591530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212933.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 125591530 is about 11206.7626904472. The cubic root of 125591530 is about 500.7874658108.

The spelling of 125591530 in words is "one hundred twenty-five million, five hundred ninety-one thousand, five hundred thirty".