20125702607551 has 2 divisors, whose sum is σ = 20125702607552. Its totient is φ = 20125702607550.

The previous prime is 20125702607537. The next prime is 20125702607561. The reversal of 20125702607551 is 15570620752102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20125702607551 - 2⁹ = 20125702607039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20125702607498 and 20125702607507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125702607561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062851303775 + 10062851303776.

It is an arithmetic number, because the mean of its divisors is an integer number (10062851303776).

Almost surely, 2^{20125702607551} is an apocalyptic number.

20125702607551 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125702607551 is an equidigital number, since it uses as much as digits as its factorization.

20125702607551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 20125702607551 in words is "twenty trillion, one hundred twenty-five billion, seven hundred two million, six hundred seven thousand, five hundred fifty-one".