25436530 has 16 divisors (see below), whose sum is σ = 52326720. Its totient is φ = 8721072.

The previous prime is 25436513. The next prime is 25436533. The reversal of 25436530 is 3563452.

It is not an unprimeable number, because it can be changed into a prime (25436533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181620 + ... + 181759.

It is an arithmetic number, because the mean of its divisors is an integer number (3270420).

Almost surely, 2^25436530 is an apocalyptic number.

25436530 is an abundant number, since it is smaller than the sum of its proper divisors (26890190).

25436530 is a wasteful number, since it uses less digits than its factorization.

25436530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363393.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 25436530 is about 5043.4640873114. The cubic root of 25436530 is about 294.0938583819.

Adding to 25436530 its reverse (3563452), we get a palindrome (28999982).

The spelling of 25436530 in words is "twenty-five million, four hundred thirty-six thousand, five hundred thirty".