25403319373 has 2 divisors, whose sum is σ = 25403319374. Its totient is φ = 25403319372.

The previous prime is 25403319323. The next prime is 25403319377. The reversal of 25403319373 is 37391330452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13738887369 + 11664432004 = 117213^2 + 108002^2 .

It is a cyclic number.

It is not a de Polignac number, because 25403319373 - 2¹⁷ = 25403188301 is a prime.

It is a super-2 number, since 2×25403319373² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25403319377) 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, 12701659686 + 12701659687.

It is an arithmetic number, because the mean of its divisors is an integer number (12701659687).

Almost surely, 2^25403319373 is an apocalyptic number.

It is an amenable number.

25403319373 is a deficient number, since it is larger than the sum of its proper divisors (1).

25403319373 is an equidigital number, since it uses as much as digits as its factorization.

25403319373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 40.

The spelling of 25403319373 in words is "twenty-five billion, four hundred three million, three hundred nineteen thousand, three hundred seventy-three".