125838618155 has 8 divisors (see below), whose sum is σ = 156213457200. Its totient is φ = 97199484256.

The previous prime is 125838618119. The next prime is 125838618161. The reversal of 125838618155 is 551816838521.

It is a happy number.

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 125838618155 - 2¹⁴ = 125838601771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125838618097 and 125838618106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433926125 + ... + 433926414.

It is an arithmetic number, because the mean of its divisors is an integer number (19526682150).

Almost surely, 2^125838618155 is an apocalyptic number.

125838618155 is a deficient number, since it is larger than the sum of its proper divisors (30374839045).

125838618155 is an equidigital number, since it uses as much as digits as its factorization.

125838618155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867852573.

The product of its digits is 2304000, while the sum is 53.

The spelling of 125838618155 in words is "one hundred twenty-five billion, eight hundred thirty-eight million, six hundred eighteen thousand, one hundred fifty-five".