135725723 has 4 divisors (see below), whose sum is σ = 155115120. Its totient is φ = 116336328.

The previous prime is 135725717. The next prime is 135725729. The reversal of 135725723 is 327527531.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (135725717) and next prime (135725729).

It is a cyclic number.

It is not a de Polignac number, because 135725723 - 2¹⁸ = 135463579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135725729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9694688 + ... + 9694701.

It is an arithmetic number, because the mean of its divisors is an integer number (38778780).

Almost surely, 2^135725723 is an apocalyptic number.

135725723 is a deficient number, since it is larger than the sum of its proper divisors (19389397).

135725723 is an equidigital number, since it uses as much as digits as its factorization.

135725723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19389396.

The product of its digits is 44100, while the sum is 35.

The square root of 135725723 is about 11650.1383253591. The cubic root of 135725723 is about 513.9103779204.

The spelling of 135725723 in words is "one hundred thirty-five million, seven hundred twenty-five thousand, seven hundred twenty-three".