25520653607 has 2 divisors, whose sum is σ = 25520653608. Its totient is φ = 25520653606.

The previous prime is 25520653597. The next prime is 25520653619. The reversal of 25520653607 is 70635602552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25520653607 - 2¹⁴ = 25520637223 is a prime.

It is a super-2 number, since 2×25520653607² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25520653637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12760326803 + 12760326804.

It is an arithmetic number, because the mean of its divisors is an integer number (12760326804).

Almost surely, 2^25520653607 is an apocalyptic number.

25520653607 is a deficient number, since it is larger than the sum of its proper divisors (1).

25520653607 is an equidigital number, since it uses as much as digits as its factorization.

25520653607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 41.

The spelling of 25520653607 in words is "twenty-five billion, five hundred twenty million, six hundred fifty-three thousand, six hundred seven".