25004919647 has 2 divisors, whose sum is σ = 25004919648. Its totient is φ = 25004919646.

The previous prime is 25004919629. The next prime is 25004919671. The reversal of 25004919647 is 74691940052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25004919647 - 2¹⁰ = 25004918623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25004919547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12502459823 + 12502459824.

It is an arithmetic number, because the mean of its divisors is an integer number (12502459824).

Almost surely, 2^25004919647 is an apocalyptic number.

25004919647 is a deficient number, since it is larger than the sum of its proper divisors (1).

25004919647 is an equidigital number, since it uses as much as digits as its factorization.

25004919647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 25004919647 in words is "twenty-five billion, four million, nine hundred nineteen thousand, six hundred forty-seven".