125506456555 has 8 divisors (see below), whose sum is σ = 150909570000. Its totient is φ = 100203950496.

The previous prime is 125506456549. The next prime is 125506456583. The reversal of 125506456555 is 555654605521.

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-125506456555 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125506456499 and 125506456508.

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, 25149100 + ... + 25154089.

It is an arithmetic number, because the mean of its divisors is an integer number (18863696250).

Almost surely, 2^125506456555 is an apocalyptic number.

125506456555 is a deficient number, since it is larger than the sum of its proper divisors (25403113445).

125506456555 is an equidigital number, since it uses as much as digits as its factorization.

125506456555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50303693.

The product of its (nonzero) digits is 4500000, while the sum is 49.

The spelling of 125506456555 in words is "one hundred twenty-five billion, five hundred six million, four hundred fifty-six thousand, five hundred fifty-five".