125451330023555 has 4 divisors (see below), whose sum is σ = 150541596028272. Its totient is φ = 100361064018840.

The previous prime is 125451330023489. The next prime is 125451330023561. The reversal of 125451330023555 is 555320033154521.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-125451330023555 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 12545133002351 + ... + 12545133002360.

It is an arithmetic number, because the mean of its divisors is an integer number (37635399007068).

Almost surely, 2^{125451330023555} is an apocalyptic number.

125451330023555 is a deficient number, since it is larger than the sum of its proper divisors (25090266004717).

125451330023555 is an equidigital number, since it uses as much as digits as its factorization.

125451330023555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25090266004716.

The product of its (nonzero) digits is 1350000, while the sum is 44.

The spelling of 125451330023555 in words is "one hundred twenty-five trillion, four hundred fifty-one billion, three hundred thirty million, twenty-three thousand, five hundred fifty-five".