25190133821 has 2 divisors, whose sum is σ = 25190133822. Its totient is φ = 25190133820.

The previous prime is 25190133803. The next prime is 25190133833. The reversal of 25190133821 is 12833109152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25190133796 + 25 = 158714^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 25190133821 - 2⁶ = 25190133757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25190133121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12595066910 + 12595066911.

It is an arithmetic number, because the mean of its divisors is an integer number (12595066911).

Almost surely, 2^25190133821 is an apocalyptic number.

It is an amenable number.

25190133821 is a deficient number, since it is larger than the sum of its proper divisors (1).

25190133821 is an equidigital number, since it uses as much as digits as its factorization.

25190133821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 25190133821 in words is "twenty-five billion, one hundred ninety million, one hundred thirty-three thousand, eight hundred twenty-one".