25235000605 has 4 divisors (see below), whose sum is σ = 30282000732. Its totient is φ = 20188000480.

The previous prime is 25235000543. The next prime is 25235000639. The reversal of 25235000605 is 50600053252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7850314404 + 17384686201 = 88602^2 + 131851^2 .

It is not a de Polignac number, because 25235000605 - 2⁷ = 25235000477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2523500056 + ... + 2523500065.

It is an arithmetic number, because the mean of its divisors is an integer number (7570500183).

Almost surely, 2^25235000605 is an apocalyptic number.

It is an amenable number.

25235000605 is a deficient number, since it is larger than the sum of its proper divisors (5047000127).

25235000605 is an equidigital number, since it uses as much as digits as its factorization.

25235000605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047000126.

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 25235000605 its reverse (50600053252), we get a palindrome (75835053857).

The spelling of 25235000605 in words is "twenty-five billion, two hundred thirty-five million, six hundred five", and thus it is an aban number.