20125605264247 has 8 divisors (see below), whose sum is σ = 24353673597216. Its totient is φ = 16235782397952.

The previous prime is 20125605264143. The next prime is 20125605264277. The reversal of 20125605264247 is 74246250652102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20125605264247 - 2⁷ = 20125605264119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20125605264197 and 20125605264206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125605264277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84561366538 + ... + 84561366775.

It is an arithmetic number, because the mean of its divisors is an integer number (3044209199652).

Almost surely, 2^{20125605264247} is an apocalyptic number.

20125605264247 is a deficient number, since it is larger than the sum of its proper divisors (4228068332969).

20125605264247 is a wasteful number, since it uses less digits than its factorization.

20125605264247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169122733337.

The product of its (nonzero) digits is 1612800, while the sum is 46.

The spelling of 20125605264247 in words is "twenty trillion, one hundred twenty-five billion, six hundred five million, two hundred sixty-four thousand, two hundred forty-seven".