25432161 has 8 divisors (see below), whose sum is σ = 33938304. Its totient is φ = 16940400.

The previous prime is 25432151. The next prime is 25432163. The reversal of 25432161 is 16123452.

25432161 is nontrivially palindromic in base 8.

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

It is not a de Polignac number, because 25432161 - 2⁶ = 25432097 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (25432163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1611 + ... + 7311.

It is an arithmetic number, because the mean of its divisors is an integer number (4242288).

Almost surely, 2^25432161 is an apocalyptic number.

It is an amenable number.

25432161 is a deficient number, since it is larger than the sum of its proper divisors (8506143).

25432161 is a wasteful number, since it uses less digits than its factorization.

25432161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7191.

The product of its digits is 1440, while the sum is 24.

The square root of 25432161 is about 5043.0309338730. The cubic root of 25432161 is about 294.0770194808.

The spelling of 25432161 in words is "twenty-five million, four hundred thirty-two thousand, one hundred sixty-one".