25463945 has 8 divisors (see below), whose sum is σ = 32907336. Its totient is φ = 18804096.

The previous prime is 25463941. The next prime is 25463947. The reversal of 25463945 is 54936452.

It can be written as a sum of positive squares in 4 ways, for example, as 1149184 + 24314761 = 1072^2 + 4931^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25463945 - 2² = 25463941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25463899 and 25463908.

It is not an unprimeable number, because it can be changed into a prime (25463941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195812 + ... + 195941.

It is an arithmetic number, because the mean of its divisors is an integer number (4113417).

Almost surely, 2^25463945 is an apocalyptic number.

It is an amenable number.

25463945 is a deficient number, since it is larger than the sum of its proper divisors (7443391).

25463945 is a wasteful number, since it uses less digits than its factorization.

25463945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391771.

The product of its digits is 129600, while the sum is 38.

The square root of 25463945 is about 5046.1812294051. The cubic root of 25463945 is about 294.1994766704.

The spelling of 25463945 in words is "twenty-five million, four hundred sixty-three thousand, nine hundred forty-five".