20125643463031 has 2 divisors, whose sum is σ = 20125643463032. Its totient is φ = 20125643463030.

The previous prime is 20125643463011. The next prime is 20125643463041. The reversal of 20125643463031 is 13036434652102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20125643463031 - 2⁵ = 20125643462999 is a prime.

It is a super-2 number, since 2×20125643463031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125643463001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062821731515 + 10062821731516.

It is an arithmetic number, because the mean of its divisors is an integer number (10062821731516).

Almost surely, 2^{20125643463031} is an apocalyptic number.

20125643463031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125643463031 is an equidigital number, since it uses as much as digits as its factorization.

20125643463031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 20125643463031 in words is "twenty trillion, one hundred twenty-five billion, six hundred forty-three million, four hundred sixty-three thousand, thirty-one".