25102212 has 12 divisors (see below), whose sum is σ = 58571856. Its totient is φ = 8367400.

The previous prime is 25102193. The next prime is 25102213. The reversal of 25102212 is 21220152.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 25102191 and 25102200.

It is not an unprimeable number, because it can be changed into a prime (25102213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045914 + ... + 1045937.

It is an arithmetic number, because the mean of its divisors is an integer number (4880988).

Almost surely, 2^25102212 is an apocalyptic number.

It is an amenable number.

25102212 is an abundant number, since it is smaller than the sum of its proper divisors (33469644).

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

25102212 is a wasteful number, since it uses less digits than its factorization.

25102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091858 (or 2091856 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 25102212 is about 5010.2107740094. The cubic root of 25102212 is about 292.7997249094.

Adding to 25102212 its reverse (21220152), we get a palindrome (46322364).

The spelling of 25102212 in words is "twenty-five million, one hundred two thousand, two hundred twelve".