25811948 has 12 divisors (see below), whose sum is σ = 45264240. Its totient is φ = 12879312.

The previous prime is 25811941. The next prime is 25811959. The reversal of 25811948 is 84911852.

It is not an unprimeable number, because it can be changed into a prime (25811941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4403 + ... + 8426.

It is an arithmetic number, because the mean of its divisors is an integer number (3772020).

Almost surely, 2^25811948 is an apocalyptic number.

It is an amenable number.

25811948 is a deficient number, since it is larger than the sum of its proper divisors (19452292).

25811948 is a wasteful number, since it uses less digits than its factorization.

25811948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13336 (or 13334 counting only the distinct ones).

The product of its digits is 23040, while the sum is 38.

The square root of 25811948 is about 5080.5460336464. The cubic root of 25811948 is about 295.5336429086.

The spelling of 25811948 in words is "twenty-five million, eight hundred eleven thousand, nine hundred forty-eight".