25212112 has 10 divisors (see below), whose sum is σ = 48848498. Its totient is φ = 12606048.

The previous prime is 25212101. The next prime is 25212113. The reversal of 25212112 is 21121252.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17943696 + 7268416 = 4236^2 + 2696^2 .

It is a super-3 number, since 3×25212112³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 1575757 = 25212112 / (2 + 5 + 2 + 1 + 2 + 1 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25212113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 787863 + ... + 787894.

Almost surely, 2^25212112 is an apocalyptic number.

It is an amenable number.

25212112 is a deficient number, since it is larger than the sum of its proper divisors (23636386).

25212112 is a wasteful number, since it uses less digits than its factorization.

25212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575765 (or 1575759 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The square root of 25212112 is about 5021.1663983581. The cubic root of 25212112 is about 293.2264050116.

Adding to 25212112 its reverse (21121252), we get a palindrome (46333364).

The spelling of 25212112 in words is "twenty-five million, two hundred twelve thousand, one hundred twelve".