12345425505 has 48 divisors (see below), whose sum is σ = 24465991680. Its totient is φ = 5641248384.

The previous prime is 12345425501. The next prime is 12345425507. The reversal of 12345425505 is 50552454321.

12345425505 is a `hidden beast` number, since 1 + 23 + 45 + 42 + 550 + 5 = 666.

It is not a de Polignac number, because 12345425505 - 2² = 12345425501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12345425505.

It is not an unprimeable number, because it can be changed into a prime (12345425501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 900079 + ... + 913691.

It is an arithmetic number, because the mean of its divisors is an integer number (509708160).

Almost surely, 2^12345425505 is an apocalyptic number.

12345425505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12345425505 is a deficient number, since it is larger than the sum of its proper divisors (12120566175).

12345425505 is a wasteful number, since it uses less digits than its factorization.

12345425505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16510 (or 16507 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 12345425505 its reverse (50552454321), we get a palindrome (62897879826).

The spelling of 12345425505 in words is "twelve billion, three hundred forty-five million, four hundred twenty-five thousand, five hundred five".