20425043501453 has 4 divisors (see below), whose sum is σ = 20425094057760. Its totient is φ = 20424992945148.

The previous prime is 20425043501413. The next prime is 20425043501483. The reversal of 20425043501453 is 35410534052402.

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 not a de Polignac number, because 20425043501453 - 2⁶ = 20425043501389 is a prime.

It is a super-2 number, since 2×20425043501453² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425043501413) 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, 24667223 + ... + 25481796.

It is an arithmetic number, because the mean of its divisors is an integer number (5106273514440).

Almost surely, 2^{20425043501453} is an apocalyptic number.

It is an amenable number.

20425043501453 is a deficient number, since it is larger than the sum of its proper divisors (50556307).

20425043501453 is an equidigital number, since it uses as much as digits as its factorization.

20425043501453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50556306.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 20425043501453 its reverse (35410534052402), we get a palindrome (55835577553855).

The spelling of 20425043501453 in words is "twenty trillion, four hundred twenty-five billion, forty-three million, five hundred one thousand, four hundred fifty-three".