25255550255553 has 24 divisors (see below), whose sum is σ = 36531019294848. Its totient is φ = 16813611310272.

The previous prime is 25255550255423. The next prime is 25255550255567. The reversal of 25255550255553 is 35555205555252.

It is not a de Polignac number, because 25255550255553 - 2⁹ = 25255550255041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25255550255553.

It is not an unprimeable number, because it can be changed into a prime (25255550253553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19992100 + ... + 21217802.

It is an arithmetic number, because the mean of its divisors is an integer number (1522125803952).

Almost surely, 2^{25255550255553} is an apocalyptic number.

It is an amenable number.

25255550255553 is a deficient number, since it is larger than the sum of its proper divisors (11275469039295).

25255550255553 is a wasteful number, since it uses less digits than its factorization.

25255550255553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228893 (or 1228890 counting only the distinct ones).

The product of its (nonzero) digits is 46875000, while the sum is 54.

The spelling of 25255550255553 in words is "twenty-five trillion, two hundred fifty-five billion, five hundred fifty million, two hundred fifty-five thousand, five hundred fifty-three".