26245109 has 4 divisors (see below), whose sum is σ = 28631040. Its totient is φ = 23859180.

The previous prime is 26245103. The next prime is 26245111. The reversal of 26245109 is 90154262.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26245109 is a prime.

It is a super-3 number, since 3×26245109³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26245103) 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, 1192949 + ... + 1192970.

It is an arithmetic number, because the mean of its divisors is an integer number (7157760).

Almost surely, 2^26245109 is an apocalyptic number.

It is an amenable number.

26245109 is a deficient number, since it is larger than the sum of its proper divisors (2385931).

26245109 is a wasteful number, since it uses less digits than its factorization.

26245109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385930.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 26245109 is about 5122.9980480184. The cubic root of 26245109 is about 297.1776382553.

The spelling of 26245109 in words is "twenty-six million, two hundred forty-five thousand, one hundred nine".