25821246053 has 2 divisors, whose sum is σ = 25821246054. Its totient is φ = 25821246052.

The previous prime is 25821246037. The next prime is 25821246071. The reversal of 25821246053 is 35064212852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13138432129 + 12682813924 = 114623^2 + 112618^2 .

It is a cyclic number.

It is not a de Polignac number, because 25821246053 - 2⁴ = 25821246037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25821245998 and 25821246016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25821246023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12910623026 + 12910623027.

It is an arithmetic number, because the mean of its divisors is an integer number (12910623027).

Almost surely, 2^25821246053 is an apocalyptic number.

It is an amenable number.

25821246053 is a deficient number, since it is larger than the sum of its proper divisors (1).

25821246053 is an equidigital number, since it uses as much as digits as its factorization.

25821246053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 25821246053 in words is "twenty-five billion, eight hundred twenty-one million, two hundred forty-six thousand, fifty-three".