20253451522 has 4 divisors (see below), whose sum is σ = 30380177286. Its totient is φ = 10126725760.

The previous prime is 20253451513. The next prime is 20253451529. The reversal of 20253451522 is 22515435202.

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

It can be written as a sum of positive squares in only one way, i.e., 19093436041 + 1160015481 = 138179^2 + 34059^2 .

It is not an unprimeable number, because it can be changed into a prime (20253451529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5063362879 + ... + 5063362882.

Almost surely, 2^20253451522 is an apocalyptic number.

20253451522 is a deficient number, since it is larger than the sum of its proper divisors (10126725764).

20253451522 is a wasteful number, since it uses less digits than its factorization.

20253451522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10126725763.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 20253451522 its reverse (22515435202), we get a palindrome (42768886724).

The spelling of 20253451522 in words is "twenty billion, two hundred fifty-three million, four hundred fifty-one thousand, five hundred twenty-two".