25502525242 has 16 divisors (see below), whose sum is σ = 38398415400. Its totient is φ = 12703122432.

The previous prime is 25502525233. The next prime is 25502525273. The reversal of 25502525242 is 24252520552.

It can be written as a sum of positive squares in 4 ways, for example, as 20206906801 + 5295618441 = 142151^2 + 72771^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25502525198 and 25502525207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755134 + ... + 788182.

Almost surely, 2^25502525242 is an apocalyptic number.

25502525242 is a deficient number, since it is larger than the sum of its proper divisors (12895890158).

25502525242 is a wasteful number, since it uses less digits than its factorization.

25502525242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34497.

The product of its (nonzero) digits is 80000, while the sum is 34.

The spelling of 25502525242 in words is "twenty-five billion, five hundred two million, five hundred twenty-five thousand, two hundred forty-two".