25985229 has 4 divisors (see below), whose sum is σ = 34646976. Its totient is φ = 17323484.

The previous prime is 25985209. The next prime is 25985249. The reversal of 25985229 is 92258952.

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 an interprime number because it is at equal distance from previous prime (25985209) and next prime (25985249).

It is a cyclic number.

It is not a de Polignac number, because 25985229 - 2¹² = 25981133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25985209) 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, 4330869 + ... + 4330874.

It is an arithmetic number, because the mean of its divisors is an integer number (8661744).

Almost surely, 2^25985229 is an apocalyptic number.

It is an amenable number.

25985229 is a deficient number, since it is larger than the sum of its proper divisors (8661747).

25985229 is an equidigital number, since it uses as much as digits as its factorization.

25985229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8661746.

The product of its digits is 129600, while the sum is 42.

The square root of 25985229 is about 5097.5708921015. The cubic root of 25985229 is about 296.1934948936.

The spelling of 25985229 in words is "twenty-five million, nine hundred eighty-five thousand, two hundred twenty-nine".