25545012 has 12 divisors (see below), whose sum is σ = 59605056. Its totient is φ = 8515000.

The previous prime is 25545011. The next prime is 25545049. The reversal of 25545012 is 21054552.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25545011) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1064364 + ... + 1064387.

It is an arithmetic number, because the mean of its divisors is an integer number (4967088).

Almost surely, 2^25545012 is an apocalyptic number.

It is an amenable number.

25545012 is an abundant number, since it is smaller than the sum of its proper divisors (34060044).

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

25545012 is a wasteful number, since it uses less digits than its factorization.

25545012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128758 (or 2128756 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 25545012 is about 5054.2073562528. The cubic root of 25545012 is about 294.5113503696.

Adding to 25545012 its reverse (21054552), we get a palindrome (46599564).

The spelling of 25545012 in words is "twenty-five million, five hundred forty-five thousand, twelve".