25220012 has 24 divisors (see below), whose sum is σ = 45405696. Its totient is φ = 12251088.

The previous prime is 25219991. The next prime is 25220033. The reversal of 25220012 is 21002252.

It is an interprime number because it is at equal distance from previous prime (25219991) and next prime (25220033).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30233 + ... + 31055.

It is an arithmetic number, because the mean of its divisors is an integer number (1891904).

Almost surely, 2^25220012 is an apocalyptic number.

It is an amenable number.

25220012 is a deficient number, since it is larger than the sum of its proper divisors (20185684).

25220012 is a wasteful number, since it uses less digits than its factorization.

25220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1035 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 25220012 is about 5021.9530065503. The cubic root of 25220012 is about 293.2570284767.

Adding to 25220012 its reverse (21002252), we get a palindrome (46222264).

The spelling of 25220012 in words is "twenty-five million, two hundred twenty thousand, twelve".