135625999 has 6 divisors (see below), whose sum is σ = 138855336. Its totient is φ = 132470100.

The previous prime is 135625981. The next prime is 135626021. The reversal of 135625999 is 999526531.

135625999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-135625999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135625939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34827 + ... + 38524.

It is an arithmetic number, because the mean of its divisors is an integer number (23142556).

Almost surely, 2^135625999 is an apocalyptic number.

135625999 is a deficient number, since it is larger than the sum of its proper divisors (3229337).

135625999 is an frugal number, since it uses more digits than its factorization.

135625999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73437 (or 73394 counting only the distinct ones).

The product of its digits is 656100, while the sum is 49.

The square root of 135625999 is about 11645.8575897183. The cubic root of 135625999 is about 513.7844824644.

The spelling of 135625999 in words is "one hundred thirty-five million, six hundred twenty-five thousand, nine hundred ninety-nine".