25463506 has 4 divisors (see below), whose sum is σ = 38195262. Its totient is φ = 12731752.

The previous prime is 25463497. The next prime is 25463509. The reversal of 25463506 is 60536452.

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

It can be written as a sum of positive squares in only one way, i.e., 15484225 + 9979281 = 3935^2 + 3159^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (25463509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365875 + ... + 6365878.

Almost surely, 2^25463506 is an apocalyptic number.

25463506 is a deficient number, since it is larger than the sum of its proper divisors (12731756).

25463506 is a wasteful number, since it uses less digits than its factorization.

25463506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12731755.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 25463506 is about 5046.1377309780. The cubic root of 25463506 is about 294.1977859883.

Adding to 25463506 its reverse (60536452), we get a palindrome (85999958).

The spelling of 25463506 in words is "twenty-five million, four hundred sixty-three thousand, five hundred six".