25530433625399 has 2 divisors, whose sum is σ = 25530433625400. Its totient is φ = 25530433625398.

The previous prime is 25530433625387. The next prime is 25530433625413. The reversal of 25530433625399 is 99352633403552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25530433625399 - 2¹⁶ = 25530433559863 is a prime.

It is a super-2 number, since 2×25530433625399² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25530433625299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12765216812699 + 12765216812700.

It is an arithmetic number, because the mean of its divisors is an integer number (12765216812700).

Almost surely, 2^{25530433625399} is an apocalyptic number.

25530433625399 is a deficient number, since it is larger than the sum of its proper divisors (1).

25530433625399 is an equidigital number, since it uses as much as digits as its factorization.

25530433625399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732000, while the sum is 59.

The spelling of 25530433625399 in words is "twenty-five trillion, five hundred thirty billion, four hundred thirty-three million, six hundred twenty-five thousand, three hundred ninety-nine".