25401529 has 2 divisors, whose sum is σ = 25401530. Its totient is φ = 25401528.

The previous prime is 25401521. The next prime is 25401533. The reversal of 25401529 is 92510452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16687225 + 8714304 = 4085^2 + 2952^2 .

It is a cyclic number.

It is not a de Polignac number, because 25401529 - 2³ = 25401521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25401497 and 25401506.

It is not a weakly prime, because it can be changed into another prime (25401521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700764 + 12700765.

It is an arithmetic number, because the mean of its divisors is an integer number (12700765).

Almost surely, 2^25401529 is an apocalyptic number.

It is an amenable number.

25401529 is a deficient number, since it is larger than the sum of its proper divisors (1).

25401529 is an equidigital number, since it uses as much as digits as its factorization.

25401529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 25401529 is about 5039.9929563443. The cubic root of 25401529 is about 293.9589041236.

The spelling of 25401529 in words is "twenty-five million, four hundred one thousand, five hundred twenty-nine".