125555005351 has 4 divisors (see below), whose sum is σ = 128948383912. Its totient is φ = 122161626792.

The previous prime is 125555005349. The next prime is 125555005391. The reversal of 125555005351 is 153500555521.

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

It is a cyclic number.

It is not a de Polignac number, because 125555005351 - 2¹ = 125555005349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 3393378523 = 125555005351 / (1 + 2 + 5 + 5 + 5 + 5 + 0 + 0 + 5 + 3 + 5 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125555005351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125555005391) by changing a digit.

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, 1696689225 + ... + 1696689298.

It is an arithmetic number, because the mean of its divisors is an integer number (32237095978).

Almost surely, 2^125555005351 is an apocalyptic number.

125555005351 is a deficient number, since it is larger than the sum of its proper divisors (3393378561).

125555005351 is an equidigital number, since it uses as much as digits as its factorization.

125555005351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393378560.

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 125555005351 in words is "one hundred twenty-five billion, five hundred fifty-five million, five thousand, three hundred fifty-one".