25045506243 has 6 divisors (see below), whose sum is σ = 36176842364. Its totient is φ = 16697004156.

The previous prime is 25045506179. The next prime is 25045506289. The reversal of 25045506243 is 34260554052.

25045506243 is a `hidden beast` number, since 2 + 5 + 0 + 4 + 550 + 62 + 43 = 666.

It is not a de Polignac number, because 25045506243 - 2⁶ = 25045506179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25045506198 and 25045506207.

It is not an unprimeable number, because it can be changed into a prime (25045506293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1391417005 + ... + 1391417022.

Almost surely, 2^25045506243 is an apocalyptic number.

25045506243 is a deficient number, since it is larger than the sum of its proper divisors (11131336121).

25045506243 is a wasteful number, since it uses less digits than its factorization.

25045506243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782834033 (or 2782834030 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 25045506243 in words is "twenty-five billion, forty-five million, five hundred six thousand, two hundred forty-three".