25525353212 has 12 divisors (see below), whose sum is σ = 44670520440. Its totient is φ = 12762347376.

The previous prime is 25525353209. The next prime is 25525353233. The reversal of 25525353212 is 21235352552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198839 + ... + 300977.

It is an arithmetic number, because the mean of its divisors is an integer number (3722543370).

Almost surely, 2^25525353212 is an apocalyptic number.

It is an amenable number.

25525353212 is a deficient number, since it is larger than the sum of its proper divisors (19145167228).

25525353212 is a wasteful number, since it uses less digits than its factorization.

25525353212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164620 (or 164618 counting only the distinct ones).

The product of its digits is 90000, while the sum is 35.

The spelling of 25525353212 in words is "twenty-five billion, five hundred twenty-five million, three hundred fifty-three thousand, two hundred twelve".