25947946 has 4 divisors (see below), whose sum is σ = 38921922. Its totient is φ = 12973972.

The previous prime is 25947941. The next prime is 25947949. The reversal of 25947946 is 64974952.

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., 21724921 + 4223025 = 4661^2 + 2055^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25947896 and 25947905.

It is not an unprimeable number, because it can be changed into a prime (25947941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6486985 + ... + 6486988.

Almost surely, 2^25947946 is an apocalyptic number.

25947946 is a deficient number, since it is larger than the sum of its proper divisors (12973976).

25947946 is a wasteful number, since it uses less digits than its factorization.

25947946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12973975.

The product of its digits is 544320, while the sum is 46.

The square root of 25947946 is about 5093.9126415752. The cubic root of 25947946 is about 296.0517699199.

It can be divided in two parts, 259 and 47946, that added together give a triangular number (48205 = T₃₁₀).

The spelling of 25947946 in words is "twenty-five million, nine hundred forty-seven thousand, nine hundred forty-six".