25988073647 has 2 divisors, whose sum is σ = 25988073648. Its totient is φ = 25988073646.

The previous prime is 25988073641. The next prime is 25988073767. The reversal of 25988073647 is 74637088952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25988073647 - 2²⁴ = 25971296431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25988073641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12994036823 + 12994036824.

It is an arithmetic number, because the mean of its divisors is an integer number (12994036824).

Almost surely, 2^25988073647 is an apocalyptic number.

25988073647 is a deficient number, since it is larger than the sum of its proper divisors (1).

25988073647 is an equidigital number, since it uses as much as digits as its factorization.

25988073647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 59.

The spelling of 25988073647 in words is "twenty-five billion, nine hundred eighty-eight million, seventy-three thousand, six hundred forty-seven".