125541235505 has 32 divisors (see below), whose sum is σ = 178389126144. Its totient is φ = 83017460736.

The previous prime is 125541235439. The next prime is 125541235507. The reversal of 125541235505 is 505532145521.

It is not a de Polignac number, because 125541235505 - 2¹⁸ = 125540973361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125541235507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282617 + ... + 575286.

It is an arithmetic number, because the mean of its divisors is an integer number (5574660192).

Almost surely, 2^125541235505 is an apocalyptic number.

It is an amenable number.

125541235505 is a deficient number, since it is larger than the sum of its proper divisors (52847890639).

125541235505 is a wasteful number, since it uses less digits than its factorization.

125541235505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858065.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 125541235505 in words is "one hundred twenty-five billion, five hundred forty-one million, two hundred thirty-five thousand, five hundred five".