125212531753 has 4 divisors (see below), whose sum is σ = 126927771988. Its totient is φ = 123497291520.

The previous prime is 125212531727. The next prime is 125212531777. The reversal of 125212531753 is 357135212521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33674819049 + 91537712704 = 183507^2 + 302552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125212531753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125212531793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857620008 + ... + 857620153.

It is an arithmetic number, because the mean of its divisors is an integer number (31731942997).

Almost surely, 2^125212531753 is an apocalyptic number.

It is an amenable number.

125212531753 is a deficient number, since it is larger than the sum of its proper divisors (1715240235).

125212531753 is an equidigital number, since it uses as much as digits as its factorization.

125212531753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715240234.

The product of its digits is 63000, while the sum is 37.

The spelling of 125212531753 in words is "one hundred twenty-five billion, two hundred twelve million, five hundred thirty-one thousand, seven hundred fifty-three".