25123303535 has 64 divisors (see below), whose sum is σ = 35545153536. Its totient is φ = 16863475200.

The previous prime is 25123303523. The next prime is 25123303559. The reversal of 25123303535 is 53530332152.

It is not a de Polignac number, because 25123303535 - 2²² = 25119109231 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 63 ways as a sum of consecutive naturals, for example, 4086674 + ... + 4092816.

It is an arithmetic number, because the mean of its divisors is an integer number (555393024).

Almost surely, 2^25123303535 is an apocalyptic number.

25123303535 is a deficient number, since it is larger than the sum of its proper divisors (10421850001).

25123303535 is a wasteful number, since it uses less digits than its factorization.

25123303535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296.

The product of its (nonzero) digits is 40500, while the sum is 32.

Adding to 25123303535 its reverse (53530332152), we get a palindrome (78653635687).

The spelling of 25123303535 in words is "twenty-five billion, one hundred twenty-three million, three hundred three thousand, five hundred thirty-five".