25015012212 has 96 divisors (see below), whose sum is σ = 60962832000. Its totient is φ = 7973586432.

The previous prime is 25015012199. The next prime is 25015012213. The reversal of 25015012212 is 21221051052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25015012213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31784883 + ... + 31785669.

It is an arithmetic number, because the mean of its divisors is an integer number (635029500).

Almost surely, 2^25015012212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25015012212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30481416000).

25015012212 is an abundant number, since it is smaller than the sum of its proper divisors (35947819788).

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

25015012212 is a wasteful number, since it uses less digits than its factorization.

25015012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1583 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 25015012212 its reverse (21221051052), we get a palindrome (46236063264).

The spelling of 25015012212 in words is "twenty-five billion, fifteen million, twelve thousand, two hundred twelve".