245209254992 has 40 divisors (see below), whose sum is σ = 511768156200. Its totient is φ = 113144832000.

The previous prime is 245209254973. The next prime is 245209255007. The reversal of 245209254992 is 299452902542.

It can be written as a sum of positive squares in 4 ways, for example, as 13081869376 + 232127385616 = 114376^2 + 481796^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 684884 + ... + 979532.

It is an arithmetic number, because the mean of its divisors is an integer number (12794203905).

Almost surely, 2^245209254992 is an apocalyptic number.

It is an amenable number.

245209254992 is an abundant number, since it is smaller than the sum of its proper divisors (266558901208).

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

245209254992 is a wasteful number, since it uses less digits than its factorization.

245209254992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298671 (or 298665 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 245209254992 in words is "two hundred forty-five billion, two hundred nine million, two hundred fifty-four thousand, nine hundred ninety-two".