135725279 has 2 divisors, whose sum is σ = 135725280. Its totient is φ = 135725278.

The previous prime is 135725269. The next prime is 135725309. The reversal of 135725279 is 972527531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135725279 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135725269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67862639 + 67862640.

It is an arithmetic number, because the mean of its divisors is an integer number (67862640).

Almost surely, 2^135725279 is an apocalyptic number.

135725279 is a deficient number, since it is larger than the sum of its proper divisors (1).

135725279 is an equidigital number, since it uses as much as digits as its factorization.

135725279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 41.

The square root of 135725279 is about 11650.1192697757. The cubic root of 135725279 is about 513.9098175343.

The spelling of 135725279 in words is "one hundred thirty-five million, seven hundred twenty-five thousand, two hundred seventy-nine".