25443012 has 48 divisors (see below), whose sum is σ = 68096000. Its totient is φ = 7242912.

The previous prime is 25443007. The next prime is 25443017. The reversal of 25443012 is 21034452.

It is an interprime number because it is at equal distance from previous prime (25443007) and next prime (25443017).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 25443012.

It is not an unprimeable number, because it can be changed into a prime (25443017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41613 + ... + 42219.

Almost surely, 2^25443012 is an apocalyptic number.

It is an amenable number.

25443012 is an abundant number, since it is smaller than the sum of its proper divisors (42652988).

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

25443012 is a wasteful number, since it uses less digits than its factorization.

25443012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1118 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 25443012 is about 5044.1066602521. The cubic root of 25443012 is about 294.1188376077.

Adding to 25443012 its reverse (21034452), we get a palindrome (46477464).

The spelling of 25443012 in words is "twenty-five million, four hundred forty-three thousand, twelve".