25972167 has 8 divisors (see below), whose sum is σ = 37293424. Its totient is φ = 15982848.

The previous prime is 25972123. The next prime is 25972189. The reversal of 25972167 is 76127952.

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

It is not a de Polignac number, because 25972167 - 2⁶ = 25972103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 665953 = 25972167 / (2 + 5 + 9 + 7 + 2 + 1 + 6 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25972367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332938 + ... + 333015.

It is an arithmetic number, because the mean of its divisors is an integer number (4661678).

Almost surely, 2^25972167 is an apocalyptic number.

25972167 is a deficient number, since it is larger than the sum of its proper divisors (11321257).

25972167 is a wasteful number, since it uses less digits than its factorization.

25972167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665969.

The product of its digits is 52920, while the sum is 39.

The square root of 25972167 is about 5096.2895325913. The cubic root of 25972167 is about 296.1438573621.

The spelling of 25972167 in words is "twenty-five million, nine hundred seventy-two thousand, one hundred sixty-seven".