25756529 has 2 divisors, whose sum is σ = 25756530. Its totient is φ = 25756528.

The previous prime is 25756501. The next prime is 25756543. The reversal of 25756529 is 92565752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24850225 + 906304 = 4985^2 + 952^2 .

It is a cyclic number.

It is not a de Polignac number, because 25756529 - 2¹⁶ = 25690993 is a prime.

It is a super-2 number, since 2×25756529² = 1326797572255682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25756729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12878264 + 12878265.

It is an arithmetic number, because the mean of its divisors is an integer number (12878265).

Almost surely, 2^25756529 is an apocalyptic number.

It is an amenable number.

25756529 is a deficient number, since it is larger than the sum of its proper divisors (1).

25756529 is an equidigital number, since it uses as much as digits as its factorization.

25756529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 41.

The square root of 25756529 is about 5075.0890632579. The cubic root of 25756529 is about 295.3219849272.

The spelling of 25756529 in words is "twenty-five million, seven hundred fifty-six thousand, five hundred twenty-nine".