25489129 has 4 divisors (see below), whose sum is σ = 26597376. Its totient is φ = 24380884.

The previous prime is 25489109. The next prime is 25489147. The reversal of 25489129 is 92198452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25489129 - 2⁵ = 25489097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25489091 and 25489100.

It is not an unprimeable number, because it can be changed into a prime (25489109) 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, 554089 + ... + 554134.

It is an arithmetic number, because the mean of its divisors is an integer number (6649344).

Almost surely, 2^25489129 is an apocalyptic number.

It is an amenable number.

25489129 is a deficient number, since it is larger than the sum of its proper divisors (1108247).

25489129 is a wasteful number, since it uses less digits than its factorization.

25489129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108246.

The product of its digits is 51840, while the sum is 40.

The square root of 25489129 is about 5048.6759650427. The cubic root of 25489129 is about 294.2964330848.

The spelling of 25489129 in words is "twenty-five million, four hundred eighty-nine thousand, one hundred twenty-nine".