25454270641 has 2 divisors, whose sum is σ = 25454270642. Its totient is φ = 25454270640.

The previous prime is 25454270609. The next prime is 25454270693. The reversal of 25454270641 is 14607245452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21880622241 + 3573648400 = 147921^2 + 59780^2 .

It is a cyclic number.

It is not a de Polignac number, because 25454270641 - 2⁵ = 25454270609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25454270594 and 25454270603.

It is not a weakly prime, because it can be changed into another prime (25454270041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12727135320 + 12727135321.

It is an arithmetic number, because the mean of its divisors is an integer number (12727135321).

Almost surely, 2^25454270641 is an apocalyptic number.

It is an amenable number.

25454270641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25454270641 is an equidigital number, since it uses as much as digits as its factorization.

25454270641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 25454270641 in words is "twenty-five billion, four hundred fifty-four million, two hundred seventy thousand, six hundred forty-one".