125730004521 has 48 divisors (see below), whose sum is σ = 193168463040. Its totient is φ = 72130919040.

The previous prime is 125730004457. The next prime is 125730004531. The reversal of 125730004521 is 125400037521.

It is not a de Polignac number, because 125730004521 - 2⁶ = 125730004457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125730004531) 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 47 ways as a sum of consecutive naturals, for example, 17782575 + ... + 17789643.

It is an arithmetic number, because the mean of its divisors is an integer number (4024342980).

Almost surely, 2^125730004521 is an apocalyptic number.

125730004521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125730004521 is a deficient number, since it is larger than the sum of its proper divisors (67438458519).

125730004521 is a wasteful number, since it uses less digits than its factorization.

125730004521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8614 (or 8595 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

It can be divided in two parts, 12573000 and 4521, that added together give a palindrome (12577521).

The spelling of 125730004521 in words is "one hundred twenty-five billion, seven hundred thirty million, four thousand, five hundred twenty-one".