25745420780353 has 4 divisors (see below), whose sum is σ = 26633193910740. Its totient is φ = 24857647649968.

The previous prime is 25745420780311. The next prime is 25745420780383. The reversal of 25745420780353 is 35308702454752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11282558538304 + 14462862242049 = 3358952^2 + 3803007^2 .

It is not a de Polignac number, because 25745420780353 - 2¹³ = 25745420772161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25745420780294 and 25745420780303.

It is not an unprimeable number, because it can be changed into a prime (25745420780383) 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 in 3 ways as a sum of consecutive naturals, for example, 443886565150 + ... + 443886565207.

It is an arithmetic number, because the mean of its divisors is an integer number (6658298477685).

Almost surely, 2^{25745420780353} is an apocalyptic number.

It is an amenable number.

25745420780353 is a deficient number, since it is larger than the sum of its proper divisors (887773130387).

25745420780353 is an equidigital number, since it uses as much as digits as its factorization.

25745420780353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887773130386.

The product of its (nonzero) digits is 28224000, while the sum is 55.

The spelling of 25745420780353 in words is "twenty-five trillion, seven hundred forty-five billion, four hundred twenty million, seven hundred eighty thousand, three hundred fifty-three".