20125600616551 has 2 divisors, whose sum is σ = 20125600616552. Its totient is φ = 20125600616550.

The previous prime is 20125600616453. The next prime is 20125600616587. The reversal of 20125600616551 is 15561600652102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20125600616551 - 2³¹ = 20123453132903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125600616591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062800308275 + 10062800308276.

It is an arithmetic number, because the mean of its divisors is an integer number (10062800308276).

Almost surely, 2^{20125600616551} is an apocalyptic number.

20125600616551 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125600616551 is an equidigital number, since it uses as much as digits as its factorization.

20125600616551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 20125600616551 in words is "twenty trillion, one hundred twenty-five billion, six hundred million, six hundred sixteen thousand, five hundred fifty-one".