25918352623 has 2 divisors, whose sum is σ = 25918352624. Its totient is φ = 25918352622.

The previous prime is 25918352587. The next prime is 25918352639. The reversal of 25918352623 is 32625381952.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25918352623 - 2¹⁷ = 25918221551 is a prime.

It is a super-2 number, since 2×25918352623² (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 (25918352923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12959176311 + 12959176312.

It is an arithmetic number, because the mean of its divisors is an integer number (12959176312).

Almost surely, 2^25918352623 is an apocalyptic number.

25918352623 is a deficient number, since it is larger than the sum of its proper divisors (1).

25918352623 is an equidigital number, since it uses as much as digits as its factorization.

25918352623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 46.

The spelling of 25918352623 in words is "twenty-five billion, nine hundred eighteen million, three hundred fifty-two thousand, six hundred twenty-three".