25406971967 has 8 divisors (see below), whose sum is σ = 27387452400. Its totient is φ = 23430219840.

The previous prime is 25406971951. The next prime is 25406972009. The reversal of 25406971967 is 76917960452.

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 25406971967 - 2⁴ = 25406971951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25406971907) 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, 917909 + ... + 945182.

It is an arithmetic number, because the mean of its divisors is an integer number (3423431550).

Almost surely, 2^25406971967 is an apocalyptic number.

25406971967 is a deficient number, since it is larger than the sum of its proper divisors (1980480433).

25406971967 is a wasteful number, since it uses less digits than its factorization.

25406971967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864153.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 25406971967 in words is "twenty-five billion, four hundred six million, nine hundred seventy-one thousand, nine hundred sixty-seven".