25015014842 has 4 divisors (see below), whose sum is σ = 37522522266. Its totient is φ = 12507507420.

The previous prime is 25015014809. The next prime is 25015014929. The reversal of 25015014842 is 24841051052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20382987361 + 4632027481 = 142769^2 + 68059^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25015014799 and 25015014808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253753709 + ... + 6253753712.

Almost surely, 2^25015014842 is an apocalyptic number.

25015014842 is a deficient number, since it is larger than the sum of its proper divisors (12507507424).

25015014842 is a wasteful number, since it uses less digits than its factorization.

25015014842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12507507423.

The product of its (nonzero) digits is 12800, while the sum is 32.

Adding to 25015014842 its reverse (24841051052), we get a palindrome (49856065894).

The spelling of 25015014842 in words is "twenty-five billion, fifteen million, fourteen thousand, eight hundred forty-two".