25680503673 has 12 divisors (see below), whose sum is σ = 40466248368. Its totient is φ = 15563941560.

The previous prime is 25680503663. The next prime is 25680503677. The reversal of 25680503673 is 37630508652.

25680503673 is a `hidden beast` number, since 2 + 5 + 6 + 80 + 503 + 67 + 3 = 666.

It is not a de Polignac number, because 25680503673 - 2¹⁶ = 25680438137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25680503677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129699415 + ... + 129699612.

It is an arithmetic number, because the mean of its divisors is an integer number (3372187364).

Almost surely, 2^25680503673 is an apocalyptic number.

It is an amenable number.

25680503673 is a deficient number, since it is larger than the sum of its proper divisors (14785744695).

25680503673 is a wasteful number, since it uses less digits than its factorization.

25680503673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259399044 (or 259399041 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 25680503673 in words is "twenty-five billion, six hundred eighty million, five hundred three thousand, six hundred seventy-three".