55281983625 has 224 divisors, whose sum is σ = 113975731584. Its totient is φ = 26535600000.

The previous prime is 55281983621. The next prime is 55281983639. The reversal of 55281983625 is 52638918255.

It is a happy number.

55281983625 is a `hidden beast` number, since 5 + 5 + 2 + 8 + 1 + 9 + 8 + 3 + 625 = 666.

It is not a de Polignac number, because 55281983625 - 2² = 55281983621 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55281983621) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 131310915 + ... + 131311335.

Almost surely, 2^55281983625 is an apocalyptic number.

55281983625 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55281983625 is an abundant number, since it is smaller than the sum of its proper divisors (58693747959).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55281983625 is a wasteful number, since it uses less digits than its factorization.

55281983625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 571 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 54.

The spelling of 55281983625 in words is "fifty-five billion, two hundred eighty-one million, nine hundred eighty-three thousand, six hundred twenty-five".