125542402550001 has 20 divisors (see below), whose sum is σ = 187538952432832. Its totient is φ = 83694800386008.

The previous prime is 125542402549987. The next prime is 125542402550051. The reversal of 125542402550001 is 100055204245521.

125542402550001 is a `hidden beast` number, since 1 + 2 + 5 + 542 + 40 + 25 + 50 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 125542402550001 - 2⁷ = 125542402549873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125542402550051) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 94930356 + ... + 96243738.

Almost surely, 2^{125542402550001} is an apocalyptic number.

It is an amenable number.

125542402550001 is a deficient number, since it is larger than the sum of its proper divisors (61996549882831).

125542402550001 is a wasteful number, since it uses less digits than its factorization.

125542402550001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493482 (or 2493473 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 125542402550001 its reverse (100055204245521), we get a palindrome (225597606795522).

The spelling of 125542402550001 in words is "one hundred twenty-five trillion, five hundred forty-two billion, four hundred two million, five hundred fifty thousand, one".