25232129 has 8 divisors (see below), whose sum is σ = 27247080. Its totient is φ = 23227776.

The previous prime is 25232093. The next prime is 25232147. The reversal of 25232129 is 92123252.

It can be written as a sum of positive squares in 4 ways, for example, as 3591025 + 21641104 = 1895^2 + 4652^2 .

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

It is not a de Polignac number, because 25232129 - 2⁸ = 25231873 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25232098 and 25232107.

It is not an unprimeable number, because it can be changed into a prime (25232149) 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, 2717 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (3405885).

Almost surely, 2^25232129 is an apocalyptic number.

It is an amenable number.

25232129 is a deficient number, since it is larger than the sum of its proper divisors (2014951).

25232129 is a wasteful number, since it uses less digits than its factorization.

25232129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5299.

The product of its digits is 2160, while the sum is 26.

The square root of 25232129 is about 5023.1592648452. The cubic root of 25232129 is about 293.3039862456.

The spelling of 25232129 in words is "twenty-five million, two hundred thirty-two thousand, one hundred twenty-nine".