25670055553 has 2 divisors, whose sum is σ = 25670055554. Its totient is φ = 25670055552.

The previous prime is 25670055497. The next prime is 25670055557. The reversal of 25670055553 is 35555007652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16375553089 + 9294502464 = 127967^2 + 96408^2 .

It is a cyclic number.

It is not a de Polignac number, because 25670055553 - 2¹⁷ = 25669924481 is a prime.

It is a super-2 number, since 2×25670055553² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25670055557) 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, 12835027776 + 12835027777.

It is an arithmetic number, because the mean of its divisors is an integer number (12835027777).

Almost surely, 2^25670055553 is an apocalyptic number.

It is an amenable number.

25670055553 is a deficient number, since it is larger than the sum of its proper divisors (1).

25670055553 is an equidigital number, since it uses as much as digits as its factorization.

25670055553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 787500, while the sum is 43.

The spelling of 25670055553 in words is "twenty-five billion, six hundred seventy million, fifty-five thousand, five hundred fifty-three".