25404746413 has 2 divisors, whose sum is σ = 25404746414. Its totient is φ = 25404746412.

The previous prime is 25404746387. The next prime is 25404746429. The reversal of 25404746413 is 31464740452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16404998724 + 8999747689 = 128082^2 + 94867^2 .

It is a cyclic number.

It is not a de Polignac number, because 25404746413 - 2³³ = 16814811821 is a prime.

It is a super-2 number, since 2×25404746413² (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 (25404746473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12702373206 + 12702373207.

It is an arithmetic number, because the mean of its divisors is an integer number (12702373207).

Almost surely, 2^25404746413 is an apocalyptic number.

It is an amenable number.

25404746413 is a deficient number, since it is larger than the sum of its proper divisors (1).

25404746413 is an equidigital number, since it uses as much as digits as its factorization.

25404746413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 40.

The spelling of 25404746413 in words is "twenty-five billion, four hundred four million, seven hundred forty-six thousand, four hundred thirteen".