12215432425 has 24 divisors (see below), whose sum is σ = 17354282112. Its totient is φ = 8355360000.

The previous prime is 12215432413. The next prime is 12215432473. The reversal of 12215432425 is 52423451221.

It is a happy number.

It is not a de Polignac number, because 12215432425 - 2¹⁹ = 12214908137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16861 + ... + 157210.

It is an arithmetic number, because the mean of its divisors is an integer number (723095088).

Almost surely, 2^12215432425 is an apocalyptic number.

It is an amenable number.

12215432425 is a deficient number, since it is larger than the sum of its proper divisors (5138849687).

12215432425 is a wasteful number, since it uses less digits than its factorization.

12215432425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174489 (or 174484 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

Adding to 12215432425 its reverse (52423451221), we get a palindrome (64638883646).

The spelling of 12215432425 in words is "twelve billion, two hundred fifteen million, four hundred thirty-two thousand, four hundred twenty-five".