25500012 has 12 divisors (see below), whose sum is σ = 59500056. Its totient is φ = 8500000.

The previous prime is 25500001. The next prime is 25500023. The reversal of 25500012 is 21000552.

It is an interprime number because it is at equal distance from previous prime (25500001) and next prime (25500023).

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

It is a super-2 number, since 2×25500012² = 1300501224000288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25499964 and 25500000.

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 3 ways as a sum of consecutive naturals, for example, 1062489 + ... + 1062512.

It is an arithmetic number, because the mean of its divisors is an integer number (4958338).

Almost surely, 2^25500012 is an apocalyptic number.

It is an amenable number.

25500012 is an abundant number, since it is smaller than the sum of its proper divisors (34000044).

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

25500012 is a wasteful number, since it uses less digits than its factorization.

25500012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125008 (or 2125006 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 25500012 is about 5049.7536573580. The cubic root of 25500012 is about 294.3383120149.

Adding to 25500012 its reverse (21000552), we get a palindrome (46500564).

The spelling of 25500012 in words is "twenty-five million, five hundred thousand, twelve".