25432430215 has 16 divisors (see below), whose sum is σ = 30948519168. Its totient is φ = 20059750656.

The previous prime is 25432430209. The next prime is 25432430267. The reversal of 25432430215 is 51203423452.

It is a cyclic number.

It is not a de Polignac number, because 25432430215 - 2⁷ = 25432430087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1097034 + ... + 1119976.

It is an arithmetic number, because the mean of its divisors is an integer number (1934282448).

Almost surely, 2^25432430215 is an apocalyptic number.

25432430215 is a deficient number, since it is larger than the sum of its proper divisors (5516088953).

25432430215 is a wasteful number, since it uses less digits than its factorization.

25432430215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26058.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 25432430215 its reverse (51203423452), we get a palindrome (76635853667).

The spelling of 25432430215 in words is "twenty-five billion, four hundred thirty-two million, four hundred thirty thousand, two hundred fifteen".