2125135447 has 2 divisors, whose sum is σ = 2125135448. Its totient is φ = 2125135446.

The previous prime is 2125135423. The next prime is 2125135451. The reversal of 2125135447 is 7445315212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2125135447 - 2⁷ = 2125135319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125135417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062567723 + 1062567724.

It is an arithmetic number, because the mean of its divisors is an integer number (1062567724).

Almost surely, 2^2125135447 is an apocalyptic number.

2125135447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125135447 is an equidigital number, since it uses as much as digits as its factorization.

2125135447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 34.

The square root of 2125135447 is about 46099.1913920407. The cubic root of 2125135447 is about 1285.6681102294.

The spelling of 2125135447 in words is "two billion, one hundred twenty-five million, one hundred thirty-five thousand, four hundred forty-seven".