20125165279 has 2 divisors, whose sum is σ = 20125165280. Its totient is φ = 20125165278.

The previous prime is 20125165259. The next prime is 20125165327. The reversal of 20125165279 is 97256152102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20125165279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125165219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062582639 + 10062582640.

It is an arithmetic number, because the mean of its divisors is an integer number (10062582640).

Almost surely, 2^20125165279 is an apocalyptic number.

20125165279 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125165279 is an equidigital number, since it uses as much as digits as its factorization.

20125165279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 20125165279 in words is "twenty billion, one hundred twenty-five million, one hundred sixty-five thousand, two hundred seventy-nine".