25816563307 has 16 divisors (see below), whose sum is σ = 27960100992. Its totient is φ = 23744066560.

The previous prime is 25816563287. The next prime is 25816563317. The reversal of 25816563307 is 70336561852.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25816563307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25816563317) 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, 497007 + ... + 546487.

It is an arithmetic number, because the mean of its divisors is an integer number (1747506312).

Almost surely, 2^25816563307 is an apocalyptic number.

25816563307 is a deficient number, since it is larger than the sum of its proper divisors (2143537685).

25816563307 is a wasteful number, since it uses less digits than its factorization.

25816563307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50198.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 25816563307 in words is "twenty-five billion, eight hundred sixteen million, five hundred sixty-three thousand, three hundred seven".