25231215235 has 16 divisors (see below), whose sum is σ = 30847975200. Its totient is φ = 19807893760.

The previous prime is 25231215203. The next prime is 25231215241. The reversal of 25231215235 is 53251213252.

It is not a de Polignac number, because 25231215235 - 2⁵ = 25231215203 is a prime.

It is a super-2 number, since 2×25231215235² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25231215197 and 25231215206.

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, 142186 + ... + 265855.

It is an arithmetic number, because the mean of its divisors is an integer number (1927998450).

Almost surely, 2^25231215235 is an apocalyptic number.

25231215235 is a deficient number, since it is larger than the sum of its proper divisors (5616759965).

25231215235 is a wasteful number, since it uses less digits than its factorization.

25231215235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408278.

The product of its digits is 18000, while the sum is 31.

Adding to 25231215235 its reverse (53251213252), we get a palindrome (78482428487).

The spelling of 25231215235 in words is "twenty-five billion, two hundred thirty-one million, two hundred fifteen thousand, two hundred thirty-five".