25618049298 has 12 divisors (see below), whose sum is σ = 55505773518. Its totient is φ = 8539349760.

The previous prime is 25618049293. The next prime is 25618049299. The reversal of 25618049298 is 89294081652.

It is a happy number.

25618049298 is a `hidden beast` number, since 2 + 5 + 61 + 8 + 0 + 492 + 98 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18420732729 + 7197316569 = 135723^2 + 84837^2 .

It is not an unprimeable number, because it can be changed into a prime (25618049291) 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 5 ways as a sum of consecutive naturals, for example, 711612463 + ... + 711612498.

Almost surely, 2^25618049298 is an apocalyptic number.

25618049298 is an abundant number, since it is smaller than the sum of its proper divisors (29887724220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25618049298 is a wasteful number, since it uses less digits than its factorization.

25618049298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423224969 (or 1423224966 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 25618049298 in words is "twenty-five billion, six hundred eighteen million, forty-nine thousand, two hundred ninety-eight".