125647855523 has 2 divisors, whose sum is σ = 125647855524. Its totient is φ = 125647855522.

The previous prime is 125647855483. The next prime is 125647855547. The reversal of 125647855523 is 325558746521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125647855523 - 2¹⁰ = 125647854499 is a prime.

It is not a weakly prime, because it can be changed into another prime (125647854523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62823927761 + 62823927762.

It is an arithmetic number, because the mean of its divisors is an integer number (62823927762).

Almost surely, 2^125647855523 is an apocalyptic number.

125647855523 is a deficient number, since it is larger than the sum of its proper divisors (1).

125647855523 is an equidigital number, since it uses as much as digits as its factorization.

125647855523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080000, while the sum is 53.

The spelling of 125647855523 in words is "one hundred twenty-five billion, six hundred forty-seven million, eight hundred fifty-five thousand, five hundred twenty-three".