25430005 has 8 divisors (see below), whose sum is σ = 30831192. Its totient is φ = 20133888.

The previous prime is 25429991. The next prime is 25430017. The reversal of 25430005 is 50003452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5008644 + 20421361 = 2238^2 + 4519^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25430005 - 2⁹ = 25429493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25732 + ... + 26701.

It is an arithmetic number, because the mean of its divisors is an integer number (3853899).

Almost surely, 2^25430005 is an apocalyptic number.

It is an amenable number.

25430005 is a deficient number, since it is larger than the sum of its proper divisors (5401187).

25430005 is an equidigital number, since it uses as much as digits as its factorization.

25430005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52535.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 25430005 is about 5042.8171690038. The cubic root of 25430005 is about 294.0687091636.

Adding to 25430005 its reverse (50003452), we get a palindrome (75433457).

The spelling of 25430005 in words is "twenty-five million, four hundred thirty thousand, five".