125564561058251 has 8 divisors (see below), whose sum is σ = 151055111047680. Its totient is φ = 101962199956968.

The previous prime is 125564561058239. The next prime is 125564561058319. The reversal of 125564561058251 is 152850165465521.

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 125564561058251 - 2⁴⁶ = 55195816880587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125564561058221) 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, 472047221891 + ... + 472047222156.

It is an arithmetic number, because the mean of its divisors is an integer number (18881888880960).

Almost surely, 2^{125564561058251} is an apocalyptic number.

125564561058251 is a deficient number, since it is larger than the sum of its proper divisors (25490549989429).

125564561058251 is an equidigital number, since it uses as much as digits as its factorization.

125564561058251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944094444073.

The product of its (nonzero) digits is 14400000, while the sum is 56.

The spelling of 125564561058251 in words is "one hundred twenty-five trillion, five hundred sixty-four billion, five hundred sixty-one million, fifty-eight thousand, two hundred fifty-one".