25940109 has 8 divisors (see below), whose sum is σ = 37247392. Its totient is φ = 15963120.

The previous prime is 25940107. The next prime is 25940179. The reversal of 25940109 is 90104952.

It is a happy number.

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

It is not a de Polignac number, because 25940109 - 2¹ = 25940107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25940107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332527 + ... + 332604.

It is an arithmetic number, because the mean of its divisors is an integer number (4655924).

Almost surely, 2^25940109 is an apocalyptic number.

It is an amenable number.

25940109 is a deficient number, since it is larger than the sum of its proper divisors (11307283).

25940109 is a wasteful number, since it uses less digits than its factorization.

25940109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665147.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 25940109 is about 5093.1433319709. The cubic root of 25940109 is about 296.0219616345.

The spelling of 25940109 in words is "twenty-five million, nine hundred forty thousand, one hundred nine".