25545273247 has 36 divisors (see below), whose sum is σ = 28413635544. Its totient is φ = 22954776000.

The previous prime is 25545273223. The next prime is 25545273253. The reversal of 25545273247 is 74237254552.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-25545273247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25545273197 and 25545273206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25545273217) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 101773872 + ... + 101774122.

It is an arithmetic number, because the mean of its divisors is an integer number (789267654).

Almost surely, 2^25545273247 is an apocalyptic number.

25545273247 is a deficient number, since it is larger than the sum of its proper divisors (2868362297).

25545273247 is a wasteful number, since it uses less digits than its factorization.

25545273247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 496 counting only the distinct ones).

The product of its digits is 2352000, while the sum is 46.

The spelling of 25545273247 in words is "twenty-five billion, five hundred forty-five million, two hundred seventy-three thousand, two hundred forty-seven".