20245533245 has 32 divisors (see below), whose sum is σ = 27945824256. Its totient is φ = 13792680000.

The previous prime is 20245533167. The next prime is 20245533247. The reversal of 20245533245 is 54233554202.

It is not a de Polignac number, because 20245533245 - 2²⁴ = 20228756029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245533247) 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, 3783662 + ... + 3789008.

It is an arithmetic number, because the mean of its divisors is an integer number (873307008).

Almost surely, 2^20245533245 is an apocalyptic number.

It is an amenable number.

20245533245 is a deficient number, since it is larger than the sum of its proper divisors (7700291011).

20245533245 is a wasteful number, since it uses less digits than its factorization.

20245533245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6041.

The product of its (nonzero) digits is 144000, while the sum is 35.

The spelling of 20245533245 in words is "twenty billion, two hundred forty-five million, five hundred thirty-three thousand, two hundred forty-five".