20625173441 has 4 divisors (see below), whose sum is σ = 20717663232. Its totient is φ = 20532683652.

The previous prime is 20625173411. The next prime is 20625173447. The reversal of 20625173441 is 14437152602.

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 20625173441 - 2⁶ = 20625173377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20625173447) 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, 46244561 + ... + 46245006.

It is an arithmetic number, because the mean of its divisors is an integer number (5179415808).

Almost surely, 2^20625173441 is an apocalyptic number.

It is an amenable number.

20625173441 is a deficient number, since it is larger than the sum of its proper divisors (92489791).

20625173441 is an equidigital number, since it uses as much as digits as its factorization.

20625173441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92489790.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 20625173441 in words is "twenty billion, six hundred twenty-five million, one hundred seventy-three thousand, four hundred forty-one".