12500235442 has 16 divisors (see below), whose sum is σ = 18847239264. Its totient is φ = 6217848000.

The previous prime is 12500235409. The next prime is 12500235463. The reversal of 12500235442 is 24453200521.

It is a super-2 number, since 2×12500235442² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12500235442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312317 + ... + 1321807.

It is an arithmetic number, because the mean of its divisors is an integer number (1177952454).

Almost surely, 2^12500235442 is an apocalyptic number.

12500235442 is a deficient number, since it is larger than the sum of its proper divisors (6347003822).

12500235442 is a wasteful number, since it uses less digits than its factorization.

12500235442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12825.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 12500235442 its reverse (24453200521), we get a palindrome (36953435963).

The spelling of 12500235442 in words is "twelve billion, five hundred million, two hundred thirty-five thousand, four hundred forty-two".