25714409 has 8 divisors (see below), whose sum is σ = 29691648. Its totient is φ = 21813120.

The previous prime is 25714369. The next prime is 25714411. The reversal of 25714409 is 90441752.

It is a happy number.

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

It is not a de Polignac number, because 25714409 - 2⁸ = 25714153 is a prime.

It is a super-2 number, since 2×25714409² = 1322461660438562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25714439) 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, 18257 + ... + 19614.

It is an arithmetic number, because the mean of its divisors is an integer number (3711456).

Almost surely, 2^25714409 is an apocalyptic number.

It is an amenable number.

25714409 is a deficient number, since it is larger than the sum of its proper divisors (3977239).

25714409 is an equidigital number, since it uses as much as digits as its factorization.

25714409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37975.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 25714409 is about 5070.9376844919. The cubic root of 25714409 is about 295.1609157512.

The spelling of 25714409 in words is "twenty-five million, seven hundred fourteen thousand, four hundred nine".