125635206450505 has 8 divisors (see below), whose sum is σ = 150771787938432. Its totient is φ = 100501805028528.

The previous prime is 125635206450443. The next prime is 125635206450563. The reversal of 125635206450505 is 505054602536521.

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

It is a cyclic number.

It is not a de Polignac number, because 125635206450505 - 2⁹ = 125635206449993 is a prime.

It is a super-2 number, since 2×125635206450505² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 794929569 + ... + 795087598.

It is an arithmetic number, because the mean of its divisors is an integer number (18846473492304).

Almost surely, 2^{125635206450505} is an apocalyptic number.

It is an amenable number.

125635206450505 is a deficient number, since it is larger than the sum of its proper divisors (25136581487927).

125635206450505 is a wasteful number, since it uses less digits than its factorization.

125635206450505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590032975.

The product of its (nonzero) digits is 5400000, while the sum is 49.

The spelling of 125635206450505 in words is "one hundred twenty-five trillion, six hundred thirty-five billion, two hundred six million, four hundred fifty thousand, five hundred five".