25853829 has 4 divisors (see below), whose sum is σ = 34471776. Its totient is φ = 17235884.

The previous prime is 25853809. The next prime is 25853837. The reversal of 25853829 is 92835852.

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 25853829 - 2⁵ = 25853797 is a prime.

It is a super-2 number, since 2×25853829² = 1336840947922482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25853809) 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, 4308969 + ... + 4308974.

It is an arithmetic number, because the mean of its divisors is an integer number (8617944).

Almost surely, 2^25853829 is an apocalyptic number.

It is an amenable number.

25853829 is a deficient number, since it is larger than the sum of its proper divisors (8617947).

25853829 is an equidigital number, since it uses as much as digits as its factorization.

25853829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8617946.

The product of its digits is 172800, while the sum is 42.

The square root of 25853829 is about 5084.6660657314. Note that the first 3 decimals coincide. The cubic root of 25853829 is about 295.6933952363.

The spelling of 25853829 in words is "twenty-five million, eight hundred fifty-three thousand, eight hundred twenty-nine".