25423573072641 has 4 divisors (see below), whose sum is σ = 33898097430192. Its totient is φ = 16949048715092.

The previous prime is 25423573072637. The next prime is 25423573072663. The reversal of 25423573072641 is 14627037532452.

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 25423573072641 - 2² = 25423573072637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25423573072621) 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, 4237262178771 + ... + 4237262178776.

It is an arithmetic number, because the mean of its divisors is an integer number (8474524357548).

Almost surely, 2^{25423573072641} is an apocalyptic number.

It is an amenable number.

25423573072641 is a deficient number, since it is larger than the sum of its proper divisors (8474524357551).

25423573072641 is an equidigital number, since it uses as much as digits as its factorization.

25423573072641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8474524357550.

The product of its (nonzero) digits is 8467200, while the sum is 51.

The spelling of 25423573072641 in words is "twenty-five trillion, four hundred twenty-three billion, five hundred seventy-three million, seventy-two thousand, six hundred forty-one".