25823129 has 4 divisors (see below), whose sum is σ = 25837620. Its totient is φ = 25808640.

The previous prime is 25823123. The next prime is 25823141. The reversal of 25823129 is 92132852.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4182025 + 21641104 = 2045^2 + 4652^2 .

It is a cyclic number.

It is not a de Polignac number, because 25823129 - 2¹² = 25819033 is a prime.

It is a super-4 number, since 4×25823129⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25823095 and 25823104.

It is not an unprimeable number, because it can be changed into a prime (25823123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4124 + ... + 8285.

It is an arithmetic number, because the mean of its divisors is an integer number (6459405).

Almost surely, 2^25823129 is an apocalyptic number.

It is an amenable number.

25823129 is a deficient number, since it is larger than the sum of its proper divisors (14491).

25823129 is a wasteful number, since it uses less digits than its factorization.

25823129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14490.

The product of its digits is 8640, while the sum is 32.

The square root of 25823129 is about 5081.6462883597. The cubic root of 25823129 is about 295.5763089982.

It can be divided in two parts, 25823 and 129, that added together give a palindrome (25952).

The spelling of 25823129 in words is "twenty-five million, eight hundred twenty-three thousand, one hundred twenty-nine".