25525140135 has 16 divisors (see below), whose sum is σ = 44552972160. Its totient is φ = 12375825440.

The previous prime is 25525140119. The next prime is 25525140143. The reversal of 25525140135 is 53104152552.

It is not a de Polignac number, because 25525140135 - 2⁴ = 25525140119 is a prime.

It is a super-2 number, since 2×25525140135² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 25525140096 and 25525140105.

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, 77348745 + ... + 77349074.

It is an arithmetic number, because the mean of its divisors is an integer number (2784560760).

Almost surely, 2^25525140135 is an apocalyptic number.

25525140135 is a deficient number, since it is larger than the sum of its proper divisors (19027832025).

25525140135 is a wasteful number, since it uses less digits than its factorization.

25525140135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154697838.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 25525140135 its reverse (53104152552), we get a palindrome (78629292687).

The spelling of 25525140135 in words is "twenty-five billion, five hundred twenty-five million, one hundred forty thousand, one hundred thirty-five".