25723535 has 4 divisors (see below), whose sum is σ = 30868248. Its totient is φ = 20578824.

The previous prime is 25723507. The next prime is 25723559. The reversal of 25723535 is 53532752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25723535 - 2⁶ = 25723471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2572349 + ... + 2572358.

It is an arithmetic number, because the mean of its divisors is an integer number (7717062).

Almost surely, 2^25723535 is an apocalyptic number.

25723535 is a deficient number, since it is larger than the sum of its proper divisors (5144713).

25723535 is an equidigital number, since it uses as much as digits as its factorization.

25723535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144712.

The product of its digits is 31500, while the sum is 32.

The square root of 25723535 is about 5071.8374382466. The cubic root of 25723535 is about 295.1958289903.

The spelling of 25723535 in words is "twenty-five million, seven hundred twenty-three thousand, five hundred thirty-five".