25142134642 has 8 divisors (see below), whose sum is σ = 37725044976. Its totient is φ = 12567119652.

The previous prime is 25142134637. The next prime is 25142134643. The reversal of 25142134642 is 24643124152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25142134598 and 25142134607.

It is not an unprimeable number, because it can be changed into a prime (25142134643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1965868 + ... + 1978615.

It is an arithmetic number, because the mean of its divisors is an integer number (4715630622).

Almost surely, 2^25142134642 is an apocalyptic number.

25142134642 is a deficient number, since it is larger than the sum of its proper divisors (12582910334).

25142134642 is a wasteful number, since it uses less digits than its factorization.

25142134642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947672.

The product of its digits is 46080, while the sum is 34.

Adding to 25142134642 its reverse (24643124152), we get a palindrome (49785258794).

The spelling of 25142134642 in words is "twenty-five billion, one hundred forty-two million, one hundred thirty-four thousand, six hundred forty-two".