25067545397 has 4 divisors (see below), whose sum is σ = 25070737260. Its totient is φ = 25064353536.

The previous prime is 25067545339. The next prime is 25067545411. The reversal of 25067545397 is 79354576052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13748500516 + 11319044881 = 117254^2 + 106391^2 .

It is a cyclic number.

It is not a de Polignac number, because 25067545397 - 2¹⁶ = 25067479861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25067545337) 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 in 3 ways as a sum of consecutive naturals, for example, 1584122 + ... + 1599867.

It is an arithmetic number, because the mean of its divisors is an integer number (6267684315).

Almost surely, 2^25067545397 is an apocalyptic number.

It is an amenable number.

25067545397 is a deficient number, since it is larger than the sum of its proper divisors (3191863).

25067545397 is an equidigital number, since it uses as much as digits as its factorization.

25067545397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191862.

The product of its (nonzero) digits is 7938000, while the sum is 53.

The spelling of 25067545397 in words is "twenty-five billion, sixty-seven million, five hundred forty-five thousand, three hundred ninety-seven".