25648946 has 4 divisors (see below), whose sum is σ = 38473422. Its totient is φ = 12824472.

The previous prime is 25648943. The next prime is 25648951. The reversal of 25648946 is 64984652.

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., 19018321 + 6630625 = 4361^2 + 2575^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25648897 and 25648906.

It is not an unprimeable number, because it can be changed into a prime (25648943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6412235 + ... + 6412238.

Almost surely, 2^25648946 is an apocalyptic number.

25648946 is a deficient number, since it is larger than the sum of its proper divisors (12824476).

25648946 is a wasteful number, since it uses less digits than its factorization.

25648946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12824475.

The product of its digits is 414720, while the sum is 44.

The square root of 25648946 is about 5064.4788478184. The cubic root of 25648946 is about 294.9102321906.

The spelling of 25648946 in words is "twenty-five million, six hundred forty-eight thousand, nine hundred forty-six".