25225138 has 8 divisors (see below), whose sum is σ = 38551788. Its totient is φ = 12374544.

The previous prime is 25225129. The next prime is 25225153. The reversal of 25225138 is 83152252.

It can be written as a sum of positive squares in 2 ways, for example, as 23941449 + 1283689 = 4893^2 + 1133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118881 + ... + 119092.

Almost surely, 2^25225138 is an apocalyptic number.

25225138 is a deficient number, since it is larger than the sum of its proper divisors (13326650).

25225138 is a wasteful number, since it uses less digits than its factorization.

25225138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238028.

The product of its digits is 4800, while the sum is 28.

The square root of 25225138 is about 5022.4633398363. The cubic root of 25225138 is about 293.2768954206.

The spelling of 25225138 in words is "twenty-five million, two hundred twenty-five thousand, one hundred thirty-eight".