25943198453 has 2 divisors, whose sum is σ = 25943198454. Its totient is φ = 25943198452.

The previous prime is 25943198447. The next prime is 25943198459. The reversal of 25943198453 is 35489134952.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (25943198447) and next prime (25943198459).

It can be written as a sum of positive squares in only one way, i.e., 18515861329 + 7427337124 = 136073^2 + 86182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25943198453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25943198395 and 25943198404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25943198459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12971599226 + 12971599227.

It is an arithmetic number, because the mean of its divisors is an integer number (12971599227).

Almost surely, 2^25943198453 is an apocalyptic number.

It is an amenable number.

25943198453 is a deficient number, since it is larger than the sum of its proper divisors (1).

25943198453 is an equidigital number, since it uses as much as digits as its factorization.

25943198453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 53.

The spelling of 25943198453 in words is "twenty-five billion, nine hundred forty-three million, one hundred ninety-eight thousand, four hundred fifty-three".