20250484157 has 4 divisors (see below), whose sum is σ = 20323590876. Its totient is φ = 20177377440.

The previous prime is 20250484151. The next prime is 20250484187. The reversal of 20250484157 is 75148405202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3875187001 + 16375297156 = 62251^2 + 127966^2 .

It is a cyclic number.

It is not a de Polignac number, because 20250484157 - 2⁸ = 20250483901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20250484157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20250484151) 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, 36552944 + ... + 36553497.

It is an arithmetic number, because the mean of its divisors is an integer number (5080897719).

Almost surely, 2^20250484157 is an apocalyptic number.

It is an amenable number.

20250484157 is a deficient number, since it is larger than the sum of its proper divisors (73106719).

20250484157 is an equidigital number, since it uses as much as digits as its factorization.

20250484157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73106718.

The product of its (nonzero) digits is 89600, while the sum is 38.

Adding to 20250484157 its reverse (75148405202), we get a palindrome (95398889359).

The spelling of 20250484157 in words is "twenty billion, two hundred fifty million, four hundred eighty-four thousand, one hundred fifty-seven".