55136255225 has 24 divisors (see below), whose sum is σ = 69357114432.
Its totient is φ = 43471937600.
The previous prime is 55136255221. The next prime is 55136255243. The reversal of 55136255225 is 52255263155.
It is not a de Polignac number, because 55136255225 - 22 = 55136255221 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (55136255221) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8397794 + ... + 8404356.
It is an arithmetic number, because the mean of its divisors is an integer number (2889879768).
Almost surely, 255136255225 is an apocalyptic number.
It is an amenable number.
55136255225 is a deficient number, since it is larger than the sum of its proper divisors (14220859207).
55136255225 is a wasteful number, since it uses less digits than its factorization.
55136255225 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11377 (or 11372 counting only the distinct ones).
The product of its digits is 450000, while the sum is 41.
The spelling of 55136255225 in words is "fifty-five billion, one hundred thirty-six million, two hundred fifty-five thousand, two hundred twenty-five".