125812815847 has 8 divisors (see below), whose sum is σ = 127744007040. Its totient is φ = 123895273080.

The previous prime is 125812815827. The next prime is 125812815857. The reversal of 125812815847 is 748518218521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125812815847 is a prime.

It is a super-2 number, since 2×125812815847² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125812815794 and 125812815803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125812815827) 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, 3393529 + ... + 3430402.

It is an arithmetic number, because the mean of its divisors is an integer number (15968000880).

Almost surely, 2^125812815847 is an apocalyptic number.

125812815847 is a deficient number, since it is larger than the sum of its proper divisors (1931191193).

125812815847 is a wasteful number, since it uses less digits than its factorization.

125812815847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824213.

The product of its digits is 1433600, while the sum is 52.

The spelling of 125812815847 in words is "one hundred twenty-five billion, eight hundred twelve million, eight hundred fifteen thousand, eight hundred forty-seven".