245255421055 has 16 divisors (see below), whose sum is σ = 300282729984. Its totient is φ = 192254096160.

The previous prime is 245255421031. The next prime is 245255421067. The reversal of 245255421055 is 550124552542.

It is not a de Polignac number, because 245255421055 - 2²⁵ = 245221866623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245255420999 and 245255421017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2061339 + ... + 2177068.

It is an arithmetic number, because the mean of its divisors is an integer number (18767670624).

Almost surely, 2^245255421055 is an apocalyptic number.

245255421055 is a deficient number, since it is larger than the sum of its proper divisors (55027308929).

245255421055 is a wasteful number, since it uses less digits than its factorization.

245255421055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238646.

The product of its (nonzero) digits is 400000, while the sum is 40.

Adding to 245255421055 its reverse (550124552542), we get a palindrome (795379973597).

The spelling of 245255421055 in words is "two hundred forty-five billion, two hundred fifty-five million, four hundred twenty-one thousand, fifty-five".