25606916971 has 8 divisors (see below), whose sum is σ = 26287790144. Its totient is φ = 24929924040.

The previous prime is 25606916963. The next prime is 25606916989. The reversal of 25606916971 is 17961960652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25606916971 - 2³ = 25606916963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25606916771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956685 + ... + 983086.

It is an arithmetic number, because the mean of its divisors is an integer number (3285973768).

Almost surely, 2^25606916971 is an apocalyptic number.

25606916971 is a deficient number, since it is larger than the sum of its proper divisors (680873173).

25606916971 is a wasteful number, since it uses less digits than its factorization.

25606916971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940121.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 25606916971 in words is "twenty-five billion, six hundred six million, nine hundred sixteen thousand, nine hundred seventy-one".