20115250297 has 4 divisors (see below), whose sum is σ = 20115640656. Its totient is φ = 20114859940.

The previous prime is 20115250273. The next prime is 20115250307. The reversal of 20115250297 is 79205251102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20115250297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20115250097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103543 + ... + 225724.

It is an arithmetic number, because the mean of its divisors is an integer number (5028910164).

Almost surely, 2^20115250297 is an apocalyptic number.

It is an amenable number.

20115250297 is a deficient number, since it is larger than the sum of its proper divisors (390359).

20115250297 is an equidigital number, since it uses as much as digits as its factorization.

20115250297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390358.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 20115250297 in words is "twenty billion, one hundred fifteen million, two hundred fifty thousand, two hundred ninety-seven".