25000006 has 4 divisors (see below), whose sum is σ = 37500012. Its totient is φ = 12500002.

The previous prime is 24999983. The next prime is 25000009. The reversal of 25000006 is 60000052.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 25000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250000 + ... + 6250003.

It is an arithmetic number, because the mean of its divisors is an integer number (9375003).

Almost surely, 2^25000006 is an apocalyptic number.

25000006 is a deficient number, since it is larger than the sum of its proper divisors (12500006).

25000006 is a wasteful number, since it uses less digits than its factorization.

25000006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12500005.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 25000006 is about 5000.0006000000. Note that the first 3 decimals coincide. The cubic root of 25000006 is about 292.4017972134.

Adding to 25000006 its reverse (60000052), we get a palindrome (85000058).

The spelling of 25000006 in words is "twenty-five million, six", and thus it is an aban number and an uban number.