25829969 has 4 divisors (see below), whose sum is σ = 28178160. Its totient is φ = 23481780.

The previous prime is 25829963. The next prime is 25829983. The reversal of 25829969 is 96992852.

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 not a de Polignac number, because 25829969 - 2¹⁶ = 25764433 is a prime.

It is a super-2 number, since 2×25829969² = 1334374597081922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25829963) 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, 1174079 + ... + 1174100.

It is an arithmetic number, because the mean of its divisors is an integer number (7044540).

Almost surely, 2^25829969 is an apocalyptic number.

It is an amenable number.

25829969 is a deficient number, since it is larger than the sum of its proper divisors (2348191).

25829969 is a wasteful number, since it uses less digits than its factorization.

25829969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348190.

The product of its digits is 699840, while the sum is 50.

The square root of 25829969 is about 5082.3192540414. The cubic root of 25829969 is about 295.6024039959.

The spelling of 25829969 in words is "twenty-five million, eight hundred twenty-nine thousand, nine hundred sixty-nine".