25947798 has 16 divisors (see below), whose sum is σ = 52184496. Its totient is φ = 8601120.

The previous prime is 25947781. The next prime is 25947829. The reversal of 25947798 is 89774952.

It is a self number, because there is not a number n which added to its sum of digits gives 25947798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10861 + ... + 13032.

It is an arithmetic number, because the mean of its divisors is an integer number (3261531).

Almost surely, 2^25947798 is an apocalyptic number.

25947798 is an abundant number, since it is smaller than the sum of its proper divisors (26236698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25947798 is a wasteful number, since it uses less digits than its factorization.

25947798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24079.

The product of its digits is 1270080, while the sum is 51.

The square root of 25947798 is about 5093.8981144110. The cubic root of 25947798 is about 296.0512070527.

The spelling of 25947798 in words is "twenty-five million, nine hundred forty-seven thousand, seven hundred ninety-eight".