25411678198 has 4 divisors (see below), whose sum is σ = 38117517300. Its totient is φ = 12705839098.

The previous prime is 25411678169. The next prime is 25411678199. The reversal of 25411678198 is 89187611452.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25411678199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6352919548 + ... + 6352919551.

It is an arithmetic number, because the mean of its divisors is an integer number (9529379325).

Almost surely, 2^25411678198 is an apocalyptic number.

25411678198 is a deficient number, since it is larger than the sum of its proper divisors (12705839102).

25411678198 is a wasteful number, since it uses less digits than its factorization.

25411678198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12705839101.

The product of its digits is 967680, while the sum is 52.

The spelling of 25411678198 in words is "twenty-five billion, four hundred eleven million, six hundred seventy-eight thousand, one hundred ninety-eight".