25005135432212 has 24 divisors (see below), whose sum is σ = 47135505442536. Its totient is φ = 11538274387968.

The previous prime is 25005135432209. The next prime is 25005135432241. The reversal of 25005135432212 is 21223453150052.

It can be written as a sum of positive squares in 4 ways, for example, as 2802229128196 + 22202906304016 = 1673986^2 + 4711996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53041193 + ... + 53510544.

It is an arithmetic number, because the mean of its divisors is an integer number (1963979393439).

Almost surely, 2^{25005135432212} is an apocalyptic number.

It is an amenable number.

25005135432212 is a deficient number, since it is larger than the sum of its proper divisors (22130370010324).

25005135432212 is a wasteful number, since it uses less digits than its factorization.

25005135432212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106556267 (or 106556265 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 25005135432212 its reverse (21223453150052), we get a palindrome (46228588582264).

The spelling of 25005135432212 in words is "twenty-five trillion, five billion, one hundred thirty-five million, four hundred thirty-two thousand, two hundred twelve".