25756985053 has 2 divisors, whose sum is σ = 25756985054. Its totient is φ = 25756985052.

The previous prime is 25756984969. The next prime is 25756985057. The reversal of 25756985053 is 35058965752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25745165209 + 11819844 = 160453^2 + 3438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25756985053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25756984985 and 25756985003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25756985057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12878492526 + 12878492527.

It is an arithmetic number, because the mean of its divisors is an integer number (12878492527).

Almost surely, 2^25756985053 is an apocalyptic number.

It is an amenable number.

25756985053 is a deficient number, since it is larger than the sum of its proper divisors (1).

25756985053 is an equidigital number, since it uses as much as digits as its factorization.

25756985053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340000, while the sum is 55.

The spelling of 25756985053 in words is "twenty-five billion, seven hundred fifty-six million, nine hundred eighty-five thousand, fifty-three".