25290527842 has 8 divisors (see below), whose sum is σ = 37979050716. Its totient is φ = 12630844272.

The previous prime is 25290527833. The next prime is 25290527861. The reversal of 25290527842 is 24872509252.

It can be written as a sum of positive squares in 2 ways, for example, as 20402979921 + 4887547921 = 142839^2 + 69911^2 .

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

It is a super-2 number, since 2×25290527842² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25290527792 and 25290527801.

It is an unprimeable number.

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, 7207633 + ... + 7211140.

Almost surely, 2^25290527842 is an apocalyptic number.

25290527842 is a deficient number, since it is larger than the sum of its proper divisors (12688522874).

25290527842 is a wasteful number, since it uses less digits than its factorization.

25290527842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14419652.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 25290527842 in words is "twenty-five billion, two hundred ninety million, five hundred twenty-seven thousand, eight hundred forty-two".