25270729 has 9 divisors (see below), whose sum is σ = 27837831. Its totient is φ = 22923120.

The previous prime is 25270711. The next prime is 25270753. The reversal of 25270729 is 92707252.

The square root of 25270729 is 5027.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 21855625 + 3415104 = 4675^2 + 1848^2 .

It is not a de Polignac number, because 25270729 - 2⁵ = 25270697 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25270694 and 25270703.

It is not an unprimeable number, because it can be changed into a prime (25270709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 55069 + ... + 55525.

Almost surely, 2^25270729 is an apocalyptic number.

25270729 is the 5027-th square number.

25270729 is the 2514-th centered octagonal number.

It is an amenable number.

25270729 is a deficient number, since it is larger than the sum of its proper divisors (2567102).

25270729 is an frugal number, since it uses more digits than its factorization.

25270729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The cubic root of 25270729 is about 293.4534750919.

The spelling of 25270729 in words is "twenty-five million, two hundred seventy thousand, seven hundred twenty-nine".