25208974243 has 4 divisors (see below), whose sum is σ = 25245456808. Its totient is φ = 25172491680.

The previous prime is 25208974213. The next prime is 25208974267. The reversal of 25208974243 is 34247980252.

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 25208974243 - 2¹³ = 25208966051 is a prime.

It is a super-3 number, since 3×25208974243³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25208974193 and 25208974202.

It is not an unprimeable number, because it can be changed into a prime (25208974213) 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, 18240246 + ... + 18241627.

It is an arithmetic number, because the mean of its divisors is an integer number (6311364202).

Almost surely, 2^25208974243 is an apocalyptic number.

25208974243 is a deficient number, since it is larger than the sum of its proper divisors (36482565).

25208974243 is an equidigital number, since it uses as much as digits as its factorization.

25208974243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36482564.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 25208974243 in words is "twenty-five billion, two hundred eight million, nine hundred seventy-four thousand, two hundred forty-three".