25552615567 has 2 divisors, whose sum is σ = 25552615568. Its totient is φ = 25552615566.

The previous prime is 25552615559. The next prime is 25552615579. The reversal of 25552615567 is 76551625552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25552615567 - 2³ = 25552615559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25552615567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25552615967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776307783 + 12776307784.

It is an arithmetic number, because the mean of its divisors is an integer number (12776307784).

Almost surely, 2^25552615567 is an apocalyptic number.

25552615567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25552615567 is an equidigital number, since it uses as much as digits as its factorization.

25552615567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150000, while the sum is 49.

The spelling of 25552615567 in words is "twenty-five billion, five hundred fifty-two million, six hundred fifteen thousand, five hundred sixty-seven".