125442525205 has 16 divisors (see below), whose sum is σ = 159738168960. Its totient is φ = 94363834048.

The previous prime is 125442525199. The next prime is 125442525223. The reversal of 125442525205 is 502525244521.

It is a cyclic number.

It is not a de Polignac number, because 125442525205 - 2¹⁹ = 125442000917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9237322 + ... + 9250891.

It is an arithmetic number, because the mean of its divisors is an integer number (9983635560).

Almost surely, 2^125442525205 is an apocalyptic number.

It is an amenable number.

125442525205 is a deficient number, since it is larger than the sum of its proper divisors (34295643755).

125442525205 is a wasteful number, since it uses less digits than its factorization.

125442525205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18488300.

The product of its (nonzero) digits is 160000, while the sum is 37.

Adding to 125442525205 its reverse (502525244521), we get a palindrome (627967769726).

The spelling of 125442525205 in words is "one hundred twenty-five billion, four hundred forty-two million, five hundred twenty-five thousand, two hundred five".