25200135331212 has 72 divisors (see below), whose sum is σ = 62465732605584. Its totient is φ = 7905530743808.

The previous prime is 25200135331207. The next prime is 25200135331219. The reversal of 25200135331212 is 21213353100252.

It is a super-2 number, since 2×25200135331212² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25200135331212.

It is not an unprimeable number, because it can be changed into a prime (25200135331219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73756918 + ... + 74097794.

It is an arithmetic number, because the mean of its divisors is an integer number (867579619522).

Almost surely, 2^{25200135331212} is an apocalyptic number.

It is an amenable number.

25200135331212 is an abundant number, since it is smaller than the sum of its proper divisors (37265597274372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25200135331212 is a wasteful number, since it uses less digits than its factorization.

25200135331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362235 (or 362216 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 25200135331212 its reverse (21213353100252), we get a palindrome (46413488431464).

The spelling of 25200135331212 in words is "twenty-five trillion, two hundred billion, one hundred thirty-five million, three hundred thirty-one thousand, two hundred twelve".