125601606351505 has 32 divisors (see below), whose sum is σ = 151350832410624. Its totient is φ = 100062687868416.

The previous prime is 125601606351497. The next prime is 125601606351569. The reversal of 125601606351505 is 505153606106521.

It is a cyclic number.

It is not a de Polignac number, because 125601606351505 - 2³ = 125601606351497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9375346467 + ... + 9375359863.

It is an arithmetic number, because the mean of its divisors is an integer number (4729713512832).

Almost surely, 2^{125601606351505} is an apocalyptic number.

It is an amenable number.

125601606351505 is a deficient number, since it is larger than the sum of its proper divisors (25749226059119).

125601606351505 is a wasteful number, since it uses less digits than its factorization.

125601606351505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19105.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 125601606351505 in words is "one hundred twenty-five trillion, six hundred one billion, six hundred six million, three hundred fifty-one thousand, five hundred five".