125808551405 has 8 divisors (see below), whose sum is σ = 152159004672. Its totient is φ = 99854345808.

The previous prime is 125808551369. The next prime is 125808551413. The reversal of 125808551405 is 504155808521.

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 125808551405 - 2⁸ = 125808551149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 99061217 + ... + 99062486.

It is an arithmetic number, because the mean of its divisors is an integer number (19019875584).

Almost surely, 2^125808551405 is an apocalyptic number.

It is an amenable number.

125808551405 is a deficient number, since it is larger than the sum of its proper divisors (26350453267).

125808551405 is a wasteful number, since it uses less digits than its factorization.

125808551405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198123835.

The product of its (nonzero) digits is 320000, while the sum is 44.

The spelling of 125808551405 in words is "one hundred twenty-five billion, eight hundred eight million, five hundred fifty-one thousand, four hundred five".