125304211555531 has 32 divisors (see below), whose sum is σ = 132933711052800. Its totient is φ = 117932033376000.

The previous prime is 125304211555529. The next prime is 125304211555543. The reversal of 125304211555531 is 135555112403521.

It is a cyclic number.

It is not a de Polignac number, because 125304211555531 - 2¹ = 125304211555529 is a prime.

It is a super-2 number, since 2×125304211555531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125304211555511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 741795181 + ... + 741964081.

It is an arithmetic number, because the mean of its divisors is an integer number (4154178470400).

Almost surely, 2^{125304211555531} is an apocalyptic number.

125304211555531 is a deficient number, since it is larger than the sum of its proper divisors (7629499497269).

125304211555531 is a wasteful number, since it uses less digits than its factorization.

125304211555531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172195.

The product of its (nonzero) digits is 450000, while the sum is 43.

The spelling of 125304211555531 in words is "one hundred twenty-five trillion, three hundred four billion, two hundred eleven million, five hundred fifty-five thousand, five hundred thirty-one".