25238129 has 8 divisors (see below), whose sum is σ = 28938240. Its totient is φ = 21561696.

The previous prime is 25238113. The next prime is 25238131. The reversal of 25238129 is 92183252.

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 25238129 - 2⁴ = 25238113 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25238095 and 25238104.

It is not an unprimeable number, because it can be changed into a prime (25238159) 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, 3569 + ... + 7950.

It is an arithmetic number, because the mean of its divisors is an integer number (3617280).

Almost surely, 2^25238129 is an apocalyptic number.

It is an amenable number.

25238129 is a deficient number, since it is larger than the sum of its proper divisors (3700111).

25238129 is a wasteful number, since it uses less digits than its factorization.

25238129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11839.

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

The square root of 25238129 is about 5023.7564630464. The cubic root of 25238129 is about 293.3272328564.

The spelling of 25238129 in words is "twenty-five million, two hundred thirty-eight thousand, one hundred twenty-nine".