20145425526657 has 12 divisors (see below), whose sum is σ = 29206324178304. Its totient is φ = 13380725440440.

The previous prime is 20145425526641. The next prime is 20145425526659. The reversal of 20145425526657 is 75662552454102.

20145425526657 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 54 + 2 + 5 + 526 + 65 + 7 = 666.

It is not a de Polignac number, because 20145425526657 - 2⁴ = 20145425526641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20145425526659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4129851093 + ... + 4129855970.

It is an arithmetic number, because the mean of its divisors is an integer number (2433860348192).

Almost surely, 2^{20145425526657} is an apocalyptic number.

It is an amenable number.

20145425526657 is a deficient number, since it is larger than the sum of its proper divisors (9060898651647).

20145425526657 is a wasteful number, since it uses less digits than its factorization.

20145425526657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8259707340 (or 8259707337 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 54.

The spelling of 20145425526657 in words is "twenty trillion, one hundred forty-five billion, four hundred twenty-five million, five hundred twenty-six thousand, six hundred fifty-seven".