125062521641 has 4 divisors (see below), whose sum is σ = 125063233284. Its totient is φ = 125061810000.

The previous prime is 125062521637. The next prime is 125062521671. The reversal of 125062521641 is 146125260521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 146125260521 = 10427 ⋅14014123.

It can be written as a sum of positive squares in 2 ways, for example, as 69394838041 + 55667683600 = 263429^2 + 235940^2 .

It is a cyclic number.

It is not a de Polignac number, because 125062521641 - 2² = 125062521637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125062521631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118931 + ... + 514071.

It is an arithmetic number, because the mean of its divisors is an integer number (31265808321).

Almost surely, 2^125062521641 is an apocalyptic number.

It is an amenable number.

125062521641 is a deficient number, since it is larger than the sum of its proper divisors (711643).

125062521641 is an equidigital number, since it uses as much as digits as its factorization.

125062521641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711642.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 125062521641 in words is "one hundred twenty-five billion, sixty-two million, five hundred twenty-one thousand, six hundred forty-one".