2505278253258 has 64 divisors (see below), whose sum is σ = 6337462809600. Its totient is φ = 726167605680.

The previous prime is 2505278253253. The next prime is 2505278253259. The reversal of 2505278253258 is 8523528725052.

It is a happy number.

2505278253258 is a `hidden beast` number, since 2 + 5 + 0 + 5 + 27 + 82 + 532 + 5 + 8 = 666.

It is a super-2 number, since 2×2505278253258² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2505278253253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91674168 + ... + 91701491.

It is an arithmetic number, because the mean of its divisors is an integer number (99022856400).

Almost surely, 2^{2505278253258} is an apocalyptic number.

2505278253258 is an abundant number, since it is smaller than the sum of its proper divisors (3832184556342).

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

2505278253258 is a wasteful number, since it uses less digits than its factorization.

2505278253258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183375704 (or 183375698 counting only the distinct ones).

The product of its (nonzero) digits is 13440000, while the sum is 54.

The spelling of 2505278253258 in words is "two trillion, five hundred five billion, two hundred seventy-eight million, two hundred fifty-three thousand, two hundred fifty-eight".