25630146 has 12 divisors (see below), whose sum is σ = 55532022. Its totient is φ = 8543376.

The previous prime is 25630141. The next prime is 25630177. The reversal of 25630146 is 64103652.

25630146 is a `hidden beast` number, since 25 + 630 + 1 + 4 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16719921 + 8910225 = 4089^2 + 2985^2 .

It is not an unprimeable number, because it can be changed into a prime (25630141) 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 5 ways as a sum of consecutive naturals, for example, 711931 + ... + 711966.

Almost surely, 2^25630146 is an apocalyptic number.

25630146 is an abundant number, since it is smaller than the sum of its proper divisors (29901876).

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

25630146 is a wasteful number, since it uses less digits than its factorization.

25630146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423905 (or 1423902 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 25630146 is about 5062.6224429637. The cubic root of 25630146 is about 294.8381607752.

Adding to 25630146 its reverse (64103652), we get a palindrome (89733798).

The spelling of 25630146 in words is "twenty-five million, six hundred thirty thousand, one hundred forty-six".