25943198471 has 4 divisors (see below), whose sum is σ = 26546528712. Its totient is φ = 25339868232.

The previous prime is 25943198459. The next prime is 25943198497. The reversal of 25943198471 is 17489134952.

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

It is a cyclic number.

It is not a de Polignac number, because 25943198471 - 2³⁴ = 8763329287 is a prime.

It is a super-3 number, since 3×25943198471³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25943198401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301665056 + ... + 301665141.

It is an arithmetic number, because the mean of its divisors is an integer number (6636632178).

Almost surely, 2^25943198471 is an apocalyptic number.

25943198471 is a deficient number, since it is larger than the sum of its proper divisors (603330241).

25943198471 is an equidigital number, since it uses as much as digits as its factorization.

25943198471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603330240.

The product of its digits is 2177280, while the sum is 53.

The spelling of 25943198471 in words is "twenty-five billion, nine hundred forty-three million, one hundred ninety-eight thousand, four hundred seventy-one".