25778793 has 4 divisors (see below), whose sum is σ = 34371728. Its totient is φ = 17185860.

The previous prime is 25778789. The next prime is 25778807. The reversal of 25778793 is 39787752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25778793 - 2² = 25778789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25778743) 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, 4296463 + ... + 4296468.

It is an arithmetic number, because the mean of its divisors is an integer number (8592932).

Almost surely, 2^25778793 is an apocalyptic number.

It is an amenable number.

25778793 is a deficient number, since it is larger than the sum of its proper divisors (8592935).

25778793 is an equidigital number, since it uses as much as digits as its factorization.

25778793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8592934.

The product of its digits is 740880, while the sum is 48.

The square root of 25778793 is about 5077.2820484980. The cubic root of 25778793 is about 295.4070527442.

The spelling of 25778793 in words is "twenty-five million, seven hundred seventy-eight thousand, seven hundred ninety-three".