25323012535 has 16 divisors (see below), whose sum is σ = 31892128704. Its totient is φ = 19265585152.

The previous prime is 25323012523. The next prime is 25323012551. The reversal of 25323012535 is 53521032352.

It is a cyclic number.

It is not a de Polignac number, because 25323012535 - 2⁵ = 25323012503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25323012497 and 25323012506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616522 + ... + 656311.

It is an arithmetic number, because the mean of its divisors is an integer number (1993258044).

Almost surely, 2^25323012535 is an apocalyptic number.

25323012535 is a deficient number, since it is larger than the sum of its proper divisors (6569116169).

25323012535 is a wasteful number, since it uses less digits than its factorization.

25323012535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273034.

The product of its (nonzero) digits is 27000, while the sum is 31.

Adding to 25323012535 its reverse (53521032352), we get a palindrome (78844044887).

The spelling of 25323012535 in words is "twenty-five billion, three hundred twenty-three million, twelve thousand, five hundred thirty-five".