25250439794 has 4 divisors (see below), whose sum is σ = 37875659694. Its totient is φ = 12625219896.

The previous prime is 25250439793. The next prime is 25250439869. The reversal of 25250439794 is 49793405252.

It is a happy number.

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., 18070080625 + 7180359169 = 134425^2 + 84737^2 .

It is not an unprimeable number, because it can be changed into a prime (25250439793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6312609947 + ... + 6312609950.

Almost surely, 2^25250439794 is an apocalyptic number.

25250439794 is a deficient number, since it is larger than the sum of its proper divisors (12625219900).

25250439794 is a wasteful number, since it uses less digits than its factorization.

25250439794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12625219899.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 25250439794 in words is "twenty-five billion, two hundred fifty million, four hundred thirty-nine thousand, seven hundred ninety-four".