25454639071 has 2 divisors, whose sum is σ = 25454639072. Its totient is φ = 25454639070.

The previous prime is 25454639047. The next prime is 25454639101. The reversal of 25454639071 is 17093645452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25454639071 - 2¹³ = 25454630879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25464639071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12727319535 + 12727319536.

It is an arithmetic number, because the mean of its divisors is an integer number (12727319536).

Almost surely, 2^25454639071 is an apocalyptic number.

25454639071 is a deficient number, since it is larger than the sum of its proper divisors (1).

25454639071 is an equidigital number, since it uses as much as digits as its factorization.

25454639071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 25454639071 in words is "twenty-five billion, four hundred fifty-four million, six hundred thirty-nine thousand, seventy-one".