25062409 has 4 divisors (see below), whose sum is σ = 25926660. Its totient is φ = 24198160.

The previous prime is 25062407. The next prime is 25062413. The reversal of 25062409 is 90426052.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14040009 + 11022400 = 3747^2 + 3320^2 .

It is a cyclic number.

It is not a de Polignac number, because 25062409 - 2¹ = 25062407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25062407) 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 3 ways as a sum of consecutive naturals, for example, 432082 + ... + 432139.

It is an arithmetic number, because the mean of its divisors is an integer number (6481665).

Almost surely, 2^25062409 is an apocalyptic number.

25062409 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

25062409 is a deficient number, since it is larger than the sum of its proper divisors (864251).

25062409 is an equidigital number, since it uses as much as digits as its factorization.

25062409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864250.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25062409 is about 5006.2370099707. The cubic root of 25062409 is about 292.6448849997.

The spelling of 25062409 in words is "twenty-five million, sixty-two thousand, four hundred nine".