125635323002061 has 4 divisors (see below), whose sum is σ = 167513764002752. Its totient is φ = 83756882001372.

The previous prime is 125635323002011. The next prime is 125635323002159. The reversal of 125635323002061 is 160200323536521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 125635323002061 - 2⁶ = 125635323001997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125635323002011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20939220500341 + ... + 20939220500346.

It is an arithmetic number, because the mean of its divisors is an integer number (41878441000688).

Almost surely, 2^{125635323002061} is an apocalyptic number.

It is an amenable number.

125635323002061 is a deficient number, since it is larger than the sum of its proper divisors (41878441000691).

125635323002061 is an equidigital number, since it uses as much as digits as its factorization.

125635323002061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41878441000690.

The product of its (nonzero) digits is 194400, while the sum is 39.

Adding to 125635323002061 its reverse (160200323536521), we get a palindrome (285835646538582).

The spelling of 125635323002061 in words is "one hundred twenty-five trillion, six hundred thirty-five billion, three hundred twenty-three million, two thousand, sixty-one".