25920946 has 4 divisors (see below), whose sum is σ = 38881422. Its totient is φ = 12960472.

The previous prime is 25920919. The next prime is 25920949. The reversal of 25920946 is 64902952.

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., 21058921 + 4862025 = 4589^2 + 2205^2 .

It is not an unprimeable number, because it can be changed into a prime (25920949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6480235 + ... + 6480238.

Almost surely, 2^25920946 is an apocalyptic number.

25920946 is a deficient number, since it is larger than the sum of its proper divisors (12960476).

25920946 is a wasteful number, since it uses less digits than its factorization.

25920946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960475.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 25920946 is about 5091.2617296698. The cubic root of 25920946 is about 295.9490492410.

It can be divided in two parts, 2592094 and 6, that added together give a square (2592100 = 1610²).

The spelling of 25920946 in words is "twenty-five million, nine hundred twenty thousand, nine hundred forty-six".