2500542647 has 2 divisors, whose sum is σ = 2500542648. Its totient is φ = 2500542646.

The previous prime is 2500542637. The next prime is 2500542673. The reversal of 2500542647 is 7462450052.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2500542647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2500542617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250271323 + 1250271324.

It is an arithmetic number, because the mean of its divisors is an integer number (1250271324).

Almost surely, 2^2500542647 is an apocalyptic number.

2500542647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500542647 is an equidigital number, since it uses as much as digits as its factorization.

2500542647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 2500542647 is about 50005.4261755662. The cubic root of 2500542647 is about 1357.3069992318.

Adding to 2500542647 its reverse (7462450052), we get a palindrome (9962992699).

The spelling of 2500542647 in words is "two billion, five hundred million, five hundred forty-two thousand, six hundred forty-seven".