135777889225 has 24 divisors (see below), whose sum is σ = 183721044672. Its totient is φ = 98720356800.

The previous prime is 135777889217. The next prime is 135777889231. The reversal of 135777889225 is 522988777531.

It is not a de Polignac number, because 135777889225 - 2³ = 135777889217 is a prime.

It is a super-2 number, since 2×135777889225² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 960444 + ... + 1092706.

It is an arithmetic number, because the mean of its divisors is an integer number (7655043528).

Almost surely, 2^135777889225 is an apocalyptic number.

It is an amenable number.

135777889225 is a deficient number, since it is larger than the sum of its proper divisors (47943155447).

135777889225 is a wasteful number, since it uses less digits than its factorization.

135777889225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136017 (or 136012 counting only the distinct ones).

The product of its digits is 59270400, while the sum is 64.

The spelling of 135777889225 in words is "one hundred thirty-five billion, seven hundred seventy-seven million, eight hundred eighty-nine thousand, two hundred twenty-five".