125771530 has 32 divisors (see below), whose sum is σ = 234524160. Its totient is φ = 48531840.

The previous prime is 125771489. The next prime is 125771531. The reversal of 125771530 is 35177521.

It is a junction number, because it is equal to n+sod(n) for n = 125771492 and 125771501.

It is not an unprimeable number, because it can be changed into a prime (125771531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31486 + ... + 35254.

It is an arithmetic number, because the mean of its divisors is an integer number (7328880).

Almost surely, 2^125771530 is an apocalyptic number.

125771530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125771530 is a deficient number, since it is larger than the sum of its proper divisors (108752630).

125771530 is a wasteful number, since it uses less digits than its factorization.

125771530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 125771530 is about 11214.7906801688. The cubic root of 125771530 is about 501.0265974196.

The spelling of 125771530 in words is "one hundred twenty-five million, seven hundred seventy-one thousand, five hundred thirty".