25230343509 has 32 divisors (see below), whose sum is σ = 42725975040. Its totient is φ = 14414661936.

The previous prime is 25230343487. The next prime is 25230343517. The reversal of 25230343509 is 90534303252.

It is not a de Polignac number, because 25230343509 - 2⁹ = 25230342997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25230343309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1485982 + ... + 1502864.

It is an arithmetic number, because the mean of its divisors is an integer number (1335186720).

Almost surely, 2^25230343509 is an apocalyptic number.

It is an amenable number.

25230343509 is a deficient number, since it is larger than the sum of its proper divisors (17495631531).

25230343509 is a wasteful number, since it uses less digits than its factorization.

25230343509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24806 (or 24800 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The spelling of 25230343509 in words is "twenty-five billion, two hundred thirty million, three hundred forty-three thousand, five hundred nine".