25828814842 has 4 divisors (see below), whose sum is σ = 38743222266. Its totient is φ = 12914407420.

The previous prime is 25828814821. The next prime is 25828814927. The reversal of 25828814842 is 24841882852.

It is a happy number.

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., 16551079801 + 9277735041 = 128651^2 + 96321^2 .

It is a super-2 number, since 2×25828814842² (a number of 22 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 25828814842.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6457203709 + ... + 6457203712.

Almost surely, 2^25828814842 is an apocalyptic number.

25828814842 is a deficient number, since it is larger than the sum of its proper divisors (12914407424).

25828814842 is a wasteful number, since it uses less digits than its factorization.

25828814842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12914407423.

The product of its digits is 2621440, while the sum is 52.

The spelling of 25828814842 in words is "twenty-five billion, eight hundred twenty-eight million, eight hundred fourteen thousand, eight hundred forty-two".