25439029 has 16 divisors (see below), whose sum is σ = 32196096. Its totient is φ = 19522800.

The previous prime is 25439023. The next prime is 25439033. The reversal of 25439029 is 92093452.

It is not a de Polignac number, because 25439029 - 2¹³ = 25430837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25438985 and 25439003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25439023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2694 + ... + 7624.

It is an arithmetic number, because the mean of its divisors is an integer number (2012256).

Almost surely, 2^25439029 is an apocalyptic number.

It is an amenable number.

25439029 is a deficient number, since it is larger than the sum of its proper divisors (6757067).

25439029 is a wasteful number, since it uses less digits than its factorization.

25439029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 25439029 is about 5043.7118276127. The cubic root of 25439029 is about 294.1034891044.

The spelling of 25439029 in words is "twenty-five million, four hundred thirty-nine thousand, twenty-nine".