25142212 has 6 divisors (see below), whose sum is σ = 43998878. Its totient is φ = 12571104.

The previous prime is 25142207. The next prime is 25142213. The reversal of 25142212 is 21224152.

It can be written as a sum of positive squares in only one way, i.e., 20196036 + 4946176 = 4494^2 + 2224^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25142212.

It is not an unprimeable number, because it can be changed into a prime (25142213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3142773 + ... + 3142780.

Almost surely, 2^25142212 is an apocalyptic number.

It is an amenable number.

25142212 is a deficient number, since it is larger than the sum of its proper divisors (18856666).

25142212 is a wasteful number, since it uses less digits than its factorization.

25142212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285557 (or 6285555 counting only the distinct ones).

The product of its digits is 320, while the sum is 19.

The square root of 25142212 is about 5014.2010330660. The cubic root of 25142212 is about 292.9551663706.

Adding to 25142212 its reverse (21224152), we get a palindrome (46366364).

The spelling of 25142212 in words is "twenty-five million, one hundred forty-two thousand, two hundred twelve".