42531125125 has 8 divisors (see below), whose sum is σ = 53078844312. Its totient is φ = 34024900000.

The previous prime is 42531125089. The next prime is 42531125173. The reversal of 42531125125 is 52152113524.

It can be written as a sum of positive squares in 4 ways, for example, as 1221782116 + 41309343009 = 34954^2 + 203247^2 .

It is not a de Polignac number, because 42531125125 - 2¹⁷ = 42530994053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170124376 + ... + 170124625.

It is an arithmetic number, because the mean of its divisors is an integer number (6634855539).

Almost surely, 2^42531125125 is an apocalyptic number.

It is an amenable number.

42531125125 is a deficient number, since it is larger than the sum of its proper divisors (10547719187).

42531125125 is an equidigital number, since it uses as much as digits as its factorization.

42531125125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340249016 (or 340249006 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

Adding to 42531125125 its reverse (52152113524), we get a palindrome (94683238649).

The spelling of 42531125125 in words is "forty-two billion, five hundred thirty-one million, one hundred twenty-five thousand, one hundred twenty-five".