25729005 has 16 divisors (see below), whose sum is σ = 41782464. Its totient is φ = 13516800.

The previous prime is 25728991. The next prime is 25729031. The reversal of 25729005 is 50092752.

It is a happy number.

It is not a de Polignac number, because 25729005 - 2¹⁹ = 25204717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11796 + ... + 13805.

It is an arithmetic number, because the mean of its divisors is an integer number (2611404).

Almost surely, 2^25729005 is an apocalyptic number.

It is an amenable number.

25729005 is a deficient number, since it is larger than the sum of its proper divisors (16053459).

25729005 is a wasteful number, since it uses less digits than its factorization.

25729005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25676.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 25729005 is about 5072.3766618815. The cubic root of 25729005 is about 295.2167515519.

The spelling of 25729005 in words is "twenty-five million, seven hundred twenty-nine thousand, five".