25349129 has 4 divisors (see below), whose sum is σ = 27299076. Its totient is φ = 23399184.

The previous prime is 25349123. The next prime is 25349131. The reversal of 25349129 is 92194352.

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 2805625 + 22543504 = 1675^2 + 4748^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25349129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25349123) 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, 974954 + ... + 974979.

It is an arithmetic number, because the mean of its divisors is an integer number (6824769).

Almost surely, 2^25349129 is an apocalyptic number.

It is an amenable number.

25349129 is a deficient number, since it is larger than the sum of its proper divisors (1949947).

25349129 is a wasteful number, since it uses less digits than its factorization.

25349129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949946.

The product of its digits is 19440, while the sum is 35.

The square root of 25349129 is about 5034.7918526986. The cubic root of 25349129 is about 293.7566321726.

The spelling of 25349129 in words is "twenty-five million, three hundred forty-nine thousand, one hundred twenty-nine".