125125566243 has 8 divisors (see below), whose sum is σ = 167165768448. Its totient is φ = 83251204104.

The previous prime is 125125566221. The next prime is 125125566263. The reversal of 125125566243 is 342665521521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125125566243 - 2⁶ = 125125566179 is a prime.

It is a super-2 number, since 2×125125566243² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125125566195 and 125125566204.

It is not an unprimeable number, because it can be changed into a prime (125125566263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41458255 + ... + 41461272.

It is an arithmetic number, because the mean of its divisors is an integer number (20895721056).

Almost surely, 2^125125566243 is an apocalyptic number.

125125566243 is a deficient number, since it is larger than the sum of its proper divisors (42040202205).

125125566243 is an equidigital number, since it uses as much as digits as its factorization.

125125566243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82920033.

The product of its digits is 432000, while the sum is 42.

It can be divided in two parts, 12512 and 5566243, that added together give a palindrome (5578755).

The spelling of 125125566243 in words is "one hundred twenty-five billion, one hundred twenty-five million, five hundred sixty-six thousand, two hundred forty-three".