20115255245 has 16 divisors (see below), whose sum is σ = 25223425920. Its totient is φ = 15370770624.

The previous prime is 20115255229. The next prime is 20115255283. The reversal of 20115255245 is 54255251102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20115255245 - 2⁴ = 20115255229 is a prime.

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, 41819 + ... + 204888.

It is an arithmetic number, because the mean of its divisors is an integer number (1576464120).

Almost surely, 2^20115255245 is an apocalyptic number.

It is an amenable number.

20115255245 is a deficient number, since it is larger than the sum of its proper divisors (5108170675).

20115255245 is a wasteful number, since it uses less digits than its factorization.

20115255245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247444.

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 20115255245 in words is "twenty billion, one hundred fifteen million, two hundred fifty-five thousand, two hundred forty-five".