125312505213461 has 2 divisors, whose sum is σ = 125312505213462. Its totient is φ = 125312505213460.

The previous prime is 125312505213451. The next prime is 125312505213521. The reversal of 125312505213461 is 164312505213521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123195570422500 + 2116934790961 = 11099350^2 + 1454969^2 .

It is a cyclic number.

It is not a de Polignac number, because 125312505213461 - 2⁶ = 125312505213397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125312505213451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62656252606730 + 62656252606731.

It is an arithmetic number, because the mean of its divisors is an integer number (62656252606731).

Almost surely, 2^{125312505213461} is an apocalyptic number.

It is an amenable number.

125312505213461 is a deficient number, since it is larger than the sum of its proper divisors (1).

125312505213461 is an equidigital number, since it uses as much as digits as its factorization.

125312505213461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 125312505213461 in words is "one hundred twenty-five trillion, three hundred twelve billion, five hundred five million, two hundred thirteen thousand, four hundred sixty-one".