20525142454403 has 4 divisors (see below), whose sum is σ = 20527450474368. Its totient is φ = 20522834434440.

The previous prime is 20525142454387. The next prime is 20525142454463. The reversal of 20525142454403 is 30445424152502.

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

It is a cyclic number.

It is not a de Polignac number, because 20525142454403 - 2⁴ = 20525142454387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20525142454463) 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, 1153996643 + ... + 1154014428.

It is an arithmetic number, because the mean of its divisors is an integer number (5131862618592).

Almost surely, 2^{20525142454403} is an apocalyptic number.

20525142454403 is a deficient number, since it is larger than the sum of its proper divisors (2308019965).

20525142454403 is an equidigital number, since it uses as much as digits as its factorization.

20525142454403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308019964.

The product of its (nonzero) digits is 768000, while the sum is 41.

The spelling of 20525142454403 in words is "twenty trillion, five hundred twenty-five billion, one hundred forty-two million, four hundred fifty-four thousand, four hundred three".