125349949393 has 2 divisors, whose sum is σ = 125349949394. Its totient is φ = 125349949392.

The previous prime is 125349949339. The next prime is 125349949441. The reversal of 125349949393 is 393949943521.

Together with previous prime (125349949339) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90346532929 + 35003416464 = 300577^2 + 187092^2 .

It is a cyclic number.

It is not a de Polignac number, because 125349949393 - 2³³ = 116760014801 is a prime.

It is a super-2 number, since 2×125349949393² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125349940393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62674974696 + 62674974697.

It is an arithmetic number, because the mean of its divisors is an integer number (62674974697).

Almost surely, 2^125349949393 is an apocalyptic number.

It is an amenable number.

125349949393 is a deficient number, since it is larger than the sum of its proper divisors (1).

125349949393 is an equidigital number, since it uses as much as digits as its factorization.

125349949393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28343520, while the sum is 61.

The spelling of 125349949393 in words is "one hundred twenty-five billion, three hundred forty-nine million, nine hundred forty-nine thousand, three hundred ninety-three".