25079869 has 4 divisors (see below), whose sum is σ = 25220160. Its totient is φ = 24939580.

The previous prime is 25079863. The next prime is 25079881. The reversal of 25079869 is 96897052.

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 not a de Polignac number, because 25079869 - 2¹¹ = 25077821 is a prime.

It is a super-2 number, since 2×25079869² = 1257999658114322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25079863) 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, 69877 + ... + 70234.

It is an arithmetic number, because the mean of its divisors is an integer number (6305040).

Almost surely, 2^25079869 is an apocalyptic number.

It is an amenable number.

25079869 is a deficient number, since it is larger than the sum of its proper divisors (140291).

25079869 is a wasteful number, since it uses less digits than its factorization.

25079869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140290.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 25079869 is about 5007.9805311123. The cubic root of 25079869 is about 292.7128273060.

The spelling of 25079869 in words is "twenty-five million, seventy-nine thousand, eight hundred sixty-nine".