25920429 has 8 divisors (see below), whose sum is σ = 34884000. Its totient is φ = 17118576.

The previous prime is 25920413. The next prime is 25920431. The reversal of 25920429 is 92402952.

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

It is not a de Polignac number, because 25920429 - 2⁴ = 25920413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25920429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25920409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40054 + ... + 40695.

It is an arithmetic number, because the mean of its divisors is an integer number (4360500).

Almost surely, 2^25920429 is an apocalyptic number.

It is an amenable number.

25920429 is a deficient number, since it is larger than the sum of its proper divisors (8963571).

25920429 is a wasteful number, since it uses less digits than its factorization.

25920429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80859.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 25920429 is about 5091.2109561479. The cubic root of 25920429 is about 295.9470816344.

The spelling of 25920429 in words is "twenty-five million, nine hundred twenty thousand, four hundred twenty-nine".