25105212 has 36 divisors (see below), whose sum is σ = 69230616. Its totient is φ = 7607520.

The previous prime is 25105193. The next prime is 25105217. The reversal of 25105212 is 21250152.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25105217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31303 + ... + 32094.

Almost surely, 2^25105212 is an apocalyptic number.

25105212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25105212 is an abundant number, since it is smaller than the sum of its proper divisors (44125404).

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

25105212 is a wasteful number, since it uses less digits than its factorization.

25105212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63418 (or 63413 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 25105212 is about 5010.5101536670. The cubic root of 25105212 is about 292.8113887445.

Adding to 25105212 its reverse (21250152), we get a palindrome (46355364).

The spelling of 25105212 in words is "twenty-five million, one hundred five thousand, two hundred twelve".