125693845213 has 2 divisors, whose sum is σ = 125693845214. Its totient is φ = 125693845212.

The previous prime is 125693845201. The next prime is 125693845231. The reversal of 125693845213 is 312548396521.

Together with next prime (125693845231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85613004409 + 40080840804 = 292597^2 + 200202^2 .

It is a cyclic number.

It is not a de Polignac number, because 125693845213 - 2³³ = 117103910621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125693845253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62846922606 + 62846922607.

It is an arithmetic number, because the mean of its divisors is an integer number (62846922607).

Almost surely, 2^125693845213 is an apocalyptic number.

It is an amenable number.

125693845213 is a deficient number, since it is larger than the sum of its proper divisors (1).

125693845213 is an equidigital number, since it uses as much as digits as its factorization.

125693845213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 49.

The spelling of 125693845213 in words is "one hundred twenty-five billion, six hundred ninety-three million, eight hundred forty-five thousand, two hundred thirteen".