25135529 has 2 divisors, whose sum is σ = 25135530. Its totient is φ = 25135528.

The previous prime is 25135493. The next prime is 25135541. The reversal of 25135529 is 92553152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15618304 + 9517225 = 3952^2 + 3085^2 .

It is a cyclic number.

It is not a de Polignac number, because 25135529 - 2⁸ = 25135273 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25135495 and 25135504.

It is not a weakly prime, because it can be changed into another prime (25135559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567764 + 12567765.

It is an arithmetic number, because the mean of its divisors is an integer number (12567765).

Almost surely, 2^25135529 is an apocalyptic number.

It is an amenable number.

25135529 is a deficient number, since it is larger than the sum of its proper divisors (1).

25135529 is an equidigital number, since it uses as much as digits as its factorization.

25135529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 32.

The square root of 25135529 is about 5013.5345815103. The cubic root of 25135529 is about 292.9292074657.

The spelling of 25135529 in words is "twenty-five million, one hundred thirty-five thousand, five hundred twenty-nine".