25952109 has 4 divisors (see below), whose sum is σ = 34602816. Its totient is φ = 17301404.

The previous prime is 25952107. The next prime is 25952111. The reversal of 25952109 is 90125952.

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.

It is an interprime number because it is at equal distance from previous prime (25952107) and next prime (25952111).

It is a cyclic number.

It is not a de Polignac number, because 25952109 - 2¹ = 25952107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25952109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25952107) 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, 4325349 + ... + 4325354.

It is an arithmetic number, because the mean of its divisors is an integer number (8650704).

Almost surely, 2^25952109 is an apocalyptic number.

It is an amenable number.

25952109 is a deficient number, since it is larger than the sum of its proper divisors (8650707).

25952109 is an equidigital number, since it uses as much as digits as its factorization.

25952109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8650706.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 25952109 is about 5094.3212501765. The cubic root of 25952109 is about 296.0676015855.

The spelling of 25952109 in words is "twenty-five million, nine hundred fifty-two thousand, one hundred nine".