25254409 has 4 divisors (see below), whose sum is σ = 25266304. Its totient is φ = 25242516.

The previous prime is 25254403. The next prime is 25254451. The reversal of 25254409 is 90445252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25254409 - 2⁹ = 25253897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25254403) 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, 1797 + ... + 7330.

It is an arithmetic number, because the mean of its divisors is an integer number (6316576).

Almost surely, 2^25254409 is an apocalyptic number.

It is an amenable number.

25254409 is a deficient number, since it is larger than the sum of its proper divisors (11895).

25254409 is an equidigital number, since it uses as much as digits as its factorization.

25254409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11894.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 25254409 is about 5025.3765033080. The cubic root of 25254409 is about 293.3902901050.

The spelling of 25254409 in words is "twenty-five million, two hundred fifty-four thousand, four hundred nine".