25783560873 has 16 divisors (see below), whose sum is σ = 43654706560. Its totient is φ = 14733463248.

The previous prime is 25783560871. The next prime is 25783560949. The reversal of 25783560873 is 37806538752.

25783560873 is a `hidden beast` number, since 2 + 5 + 7 + 8 + 3 + 560 + 8 + 73 = 666.

It is not a de Polignac number, because 25783560873 - 2¹ = 25783560871 is a prime.

It is a super-2 number, since 2×25783560873² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25783560871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68210290 + ... + 68210667.

It is an arithmetic number, because the mean of its divisors is an integer number (2728419160).

Almost surely, 2^25783560873 is an apocalyptic number.

It is an amenable number.

25783560873 is a deficient number, since it is larger than the sum of its proper divisors (17871145687).

25783560873 is a wasteful number, since it uses less digits than its factorization.

25783560873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136420973 (or 136420967 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 25783560873 in words is "twenty-five billion, seven hundred eighty-three million, five hundred sixty thousand, eight hundred seventy-three".