255642415510550 has 12 divisors (see below), whose sum is σ = 475494892849716. Its totient is φ = 102256966204200.

The previous prime is 255642415510499. The next prime is 255642415510567. The reversal of 255642415510550 is 55015514246552.

It is a super-2 number, since 2×255642415510550² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 5112848310211 = 255642415510550 / (2 + 5 + 5 + 6 + 4 + 2 + 4 + 1 + 5 + 5 + 1 + 0 + 5 + 5 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2556424155056 + ... + 2556424155155.

It is an arithmetic number, because the mean of its divisors is an integer number (39624574404143).

Almost surely, 2^{255642415510550} is an apocalyptic number.

255642415510550 is a deficient number, since it is larger than the sum of its proper divisors (219852477339166).

255642415510550 is a wasteful number, since it uses less digits than its factorization.

255642415510550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112848310223 (or 5112848310218 counting only the distinct ones).

The product of its (nonzero) digits is 6000000, while the sum is 50.

The spelling of 255642415510550 in words is "two hundred fifty-five trillion, six hundred forty-two billion, four hundred fifteen million, five hundred ten thousand, five hundred fifty".