25729023 has 16 divisors (see below), whose sum is σ = 35444576. Its totient is φ = 16588800.

The previous prime is 25728991. The next prime is 25729031. The reversal of 25729023 is 32092752.

It is a happy number.

It is not a de Polignac number, because 25729023 - 2⁵ = 25728991 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25729073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20823 + ... + 22023.

It is an arithmetic number, because the mean of its divisors is an integer number (2215286).

Almost surely, 2^25729023 is an apocalyptic number.

25729023 is a deficient number, since it is larger than the sum of its proper divisors (9715553).

25729023 is a wasteful number, since it uses less digits than its factorization.

25729023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 25729023 is about 5072.3784361974. The cubic root of 25729023 is about 295.2168203964.

The spelling of 25729023 in words is "twenty-five million, seven hundred twenty-nine thousand, twenty-three".