25324729 has 2 divisors, whose sum is σ = 25324730. Its totient is φ = 25324728.

The previous prime is 25324723. The next prime is 25324787. The reversal of 25324729 is 92742352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21114025 + 4210704 = 4595^2 + 2052^2 .

It is a cyclic number.

It is not a de Polignac number, because 25324729 - 2⁵ = 25324697 is a prime.

It is equal to p_1584907 and since 25324729 and 1584907 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 25324694 and 25324703.

It is not a weakly prime, because it can be changed into another prime (25324723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12662364 + 12662365.

It is an arithmetic number, because the mean of its divisors is an integer number (12662365).

Almost surely, 2^25324729 is an apocalyptic number.

It is an amenable number.

25324729 is a deficient number, since it is larger than the sum of its proper divisors (1).

25324729 is an equidigital number, since it uses as much as digits as its factorization.

25324729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 25324729 is about 5032.3681304134. The cubic root of 25324729 is about 293.6623493431.

The spelling of 25324729 in words is "twenty-five million, three hundred twenty-four thousand, seven hundred twenty-nine".