12565240254 has 24 divisors (see below), whose sum is σ = 31113928560. Its totient is φ = 3590068608.

The previous prime is 12565240241. The next prime is 12565240273. The reversal of 12565240254 is 45204256521.

12565240254 is a `hidden beast` number, since 1 + 2 + 565 + 2 + 40 + 2 + 54 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49861939 + ... + 49862190.

It is an arithmetic number, because the mean of its divisors is an integer number (1296413690).

Almost surely, 2^12565240254 is an apocalyptic number.

12565240254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12565240254 is an abundant number, since it is smaller than the sum of its proper divisors (18548688306).

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

12565240254 is a wasteful number, since it uses less digits than its factorization.

12565240254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99724144 (or 99724141 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 12565240254 its reverse (45204256521), we get a palindrome (57769496775).

The spelling of 12565240254 in words is "twelve billion, five hundred sixty-five million, two hundred forty thousand, two hundred fifty-four".