25325431 has 4 divisors (see below), whose sum is σ = 25740664. Its totient is φ = 24910200.

The previous prime is 25325411. The next prime is 25325437. The reversal of 25325431 is 13452352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25325431 - 2⁷ = 25325303 is a prime.

It is a super-2 number, since 2×25325431² = 1282754910671522, 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 = 25325396 and 25325405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25325437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207525 + ... + 207646.

It is an arithmetic number, because the mean of its divisors is an integer number (6435166).

Almost surely, 2^25325431 is an apocalyptic number.

25325431 is a deficient number, since it is larger than the sum of its proper divisors (415233).

25325431 is an equidigital number, since it uses as much as digits as its factorization.

25325431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415232.

The product of its digits is 3600, while the sum is 25.

The square root of 25325431 is about 5032.4378784045. The cubic root of 25325431 is about 293.6650627524.

Adding to 25325431 its reverse (13452352), we get a palindrome (38777783).

The spelling of 25325431 in words is "twenty-five million, three hundred twenty-five thousand, four hundred thirty-one".