25541666298 has 12 divisors (see below), whose sum is σ = 55340277018. Its totient is φ = 8513888760.

The previous prime is 25541666281. The next prime is 25541666333. The reversal of 25541666298 is 89266614552.

It can be written as a sum of positive squares in only one way, i.e., 19494582129 + 6047084169 = 139623^2 + 77763^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 709490713 + ... + 709490748.

Almost surely, 2^25541666298 is an apocalyptic number.

25541666298 is an abundant number, since it is smaller than the sum of its proper divisors (29798610720).

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

25541666298 is a wasteful number, since it uses less digits than its factorization.

25541666298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418981469 (or 1418981466 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 25541666298 in words is "twenty-five billion, five hundred forty-one million, six hundred sixty-six thousand, two hundred ninety-eight".