25195212 has 162 divisors, whose sum is σ = 80315508. Its totient is φ = 6885648.

The previous prime is 25195211. The next prime is 25195213. The reversal of 25195212 is 21259152.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (25195211) and next prime (25195213).

It is a tau number, because it is divible by the number of its divisors (162).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25195211) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1095433 + ... + 1095455.

Almost surely, 2^25195212 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 25195212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40157754).

25195212 is an abundant number, since it is smaller than the sum of its proper divisors (55120296).

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

25195212 is a wasteful number, since it uses less digits than its factorization.

25195212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 35 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 25195212 is about 5019.4832403346. The cubic root of 25195212 is about 293.1608725682.

Multiplying 25195212 by its sum of digits (27), we get a square (680270724 = 26082²).

25195212 divided by its sum of digits (27) gives a square (933156 = 966²).

The spelling of 25195212 in words is "twenty-five million, one hundred ninety-five thousand, two hundred twelve".