25752729 has 4 divisors (see below), whose sum is σ = 34336976. Its totient is φ = 17168484.

The previous prime is 25752719. The next prime is 25752731. The reversal of 25752729 is 92725752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25752729 - 2⁸ = 25752473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25752719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4292119 + ... + 4292124.

It is an arithmetic number, because the mean of its divisors is an integer number (8584244).

Almost surely, 2^25752729 is an apocalyptic number.

It is an amenable number.

25752729 is a deficient number, since it is larger than the sum of its proper divisors (8584247).

25752729 is an equidigital number, since it uses as much as digits as its factorization.

25752729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8584246.

The product of its digits is 88200, while the sum is 39.

The square root of 25752729 is about 5074.7146717821. The cubic root of 25752729 is about 295.3074607298.

The spelling of 25752729 in words is "twenty-five million, seven hundred fifty-two thousand, seven hundred twenty-nine".