25919999953 has 2 divisors, whose sum is σ = 25919999954. Its totient is φ = 25919999952.

The previous prime is 25919999927. The next prime is 25919999999. The reversal of 25919999953 is 35999991952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16474492609 + 9445507344 = 128353^2 + 97188^2 .

It is a cyclic number.

It is not a de Polignac number, because 25919999953 - 2⁵ = 25919999921 is a prime.

It is not a weakly prime, because it can be changed into another prime (25919990953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12959999976 + 12959999977.

It is an arithmetic number, because the mean of its divisors is an integer number (12959999977).

Almost surely, 2^25919999953 is an apocalyptic number.

It is an amenable number.

25919999953 is a deficient number, since it is larger than the sum of its proper divisors (1).

25919999953 is an equidigital number, since it uses as much as digits as its factorization.

25919999953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79716150, while the sum is 70.

The spelling of 25919999953 in words is "twenty-five billion, nine hundred nineteen million, nine hundred ninety-nine thousand, nine hundred fifty-three".