125169042530 has 32 divisors (see below), whose sum is σ = 257508284544. Its totient is φ = 42912153216.

The previous prime is 125169042529. The next prime is 125169042539. The reversal of 125169042530 is 35240961521.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125169042539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1128854 + ... + 1234766.

It is an arithmetic number, because the mean of its divisors is an integer number (8047133892).

Almost surely, 2^125169042530 is an apocalyptic number.

125169042530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125169042530 is an abundant number, since it is smaller than the sum of its proper divisors (132339242014).

125169042530 is a wasteful number, since it uses less digits than its factorization.

125169042530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122810.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 125169042530 in words is "one hundred twenty-five billion, one hundred sixty-nine million, forty-two thousand, five hundred thirty".