25342109 has 8 divisors (see below), whose sum is σ = 27807192. Its totient is φ = 22950720.

The previous prime is 25342103. The next prime is 25342111. The reversal of 25342109 is 90124352.

It can be written as a sum of positive squares in 4 ways, for example, as 41209 + 25300900 = 203^2 + 5030^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-25342109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25342103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17702 + ... + 19079.

It is an arithmetic number, because the mean of its divisors is an integer number (3475899).

Almost surely, 2^25342109 is an apocalyptic number.

It is an amenable number.

25342109 is a deficient number, since it is larger than the sum of its proper divisors (2465083).

25342109 is a wasteful number, since it uses less digits than its factorization.

25342109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36847.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 25342109 is about 5034.0946554470. The cubic root of 25342109 is about 293.7295127405.

The spelling of 25342109 in words is "twenty-five million, three hundred forty-two thousand, one hundred nine".