25000216 has 8 divisors (see below), whose sum is σ = 46875420. Its totient is φ = 12500104.

The previous prime is 25000211. The next prime is 25000231. The reversal of 25000216 is 61200052.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 25000216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562506 + ... + 1562521.

Almost surely, 2^25000216 is an apocalyptic number.

It is an amenable number.

25000216 is a deficient number, since it is larger than the sum of its proper divisors (21875204).

25000216 is a wasteful number, since it uses less digits than its factorization.

25000216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125033 (or 3125029 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 25000216 is about 5000.0215999533. The cubic root of 25000216 is about 292.4026159360.

Adding to 25000216 its reverse (61200052), we get a palindrome (86200268).

The spelling of 25000216 in words is "twenty-five million, two hundred sixteen", and thus it is an aban number.