25432131 has 8 divisors (see below), whose sum is σ = 34177024. Its totient is φ = 16821000.

The previous prime is 25432111. The next prime is 25432133. The reversal of 25432131 is 13123452.

25432131 is nontrivially palindromic in base 2.

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

It is not a de Polignac number, because 25432131 - 2⁷ = 25432003 is a prime.

It is a super-2 number, since 2×25432131² = 1293586574402322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25432098 and 25432107.

It is not an unprimeable number, because it can be changed into a prime (25432133) 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, 32995 + ... + 33756.

It is an arithmetic number, because the mean of its divisors is an integer number (4272128).

Almost surely, 2^25432131 is an apocalyptic number.

25432131 is a deficient number, since it is larger than the sum of its proper divisors (8744893).

25432131 is a wasteful number, since it uses less digits than its factorization.

25432131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66881.

The product of its digits is 720, while the sum is 21.

The square root of 25432131 is about 5043.0279594704. The cubic root of 25432131 is about 294.0769038488.

Adding to 25432131 its reverse (13123452), we get a palindrome (38555583).

It can be divided in two parts, 254 and 32131, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 25432131 in words is "twenty-five million, four hundred thirty-two thousand, one hundred thirty-one".