125663545155263 has 4 divisors (see below), whose sum is σ = 126495754063728. Its totient is φ = 124831336246800.

The previous prime is 125663545155227. The next prime is 125663545155277. The reversal of 125663545155263 is 362551545366521.

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

It is a cyclic number.

It is not a de Polignac number, because 125663545155263 - 2⁶ = 125663545155199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125663545155163) 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, 416104454006 + ... + 416104454307.

It is an arithmetic number, because the mean of its divisors is an integer number (31623938515932).

Almost surely, 2^{125663545155263} is an apocalyptic number.

125663545155263 is a deficient number, since it is larger than the sum of its proper divisors (832208908465).

125663545155263 is an equidigital number, since it uses as much as digits as its factorization.

125663545155263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832208908464.

The product of its digits is 97200000, while the sum is 59.

The spelling of 125663545155263 in words is "one hundred twenty-five trillion, six hundred sixty-three billion, five hundred forty-five million, one hundred fifty-five thousand, two hundred sixty-three".