25628129 has 8 divisors (see below), whose sum is σ = 27767520. Its totient is φ = 23558976.

The previous prime is 25628123. The next prime is 25628143. The reversal of 25628129 is 92182652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25628129 - 2⁸ = 25627873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25628123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16799 + ... + 18260.

It is an arithmetic number, because the mean of its divisors is an integer number (3470940).

Almost surely, 2^25628129 is an apocalyptic number.

It is an amenable number.

25628129 is a deficient number, since it is larger than the sum of its proper divisors (2139391).

25628129 is a wasteful number, since it uses less digits than its factorization.

25628129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35119.

The product of its digits is 17280, while the sum is 35.

The square root of 25628129 is about 5062.4232339859. The cubic root of 25628129 is about 294.8304263392.

The spelling of 25628129 in words is "twenty-five million, six hundred twenty-eight thousand, one hundred twenty-nine".