25912146749 has 2 divisors, whose sum is σ = 25912146750. Its totient is φ = 25912146748.

The previous prime is 25912146719. The next prime is 25912146761. The reversal of 25912146749 is 94764121952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20026495225 + 5885651524 = 141515^2 + 76718^2 .

It is a cyclic number.

It is not a de Polignac number, because 25912146749 - 2¹² = 25912142653 is a prime.

It is a super-2 number, since 2×25912146749² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25912146697 and 25912146706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25912146719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12956073374 + 12956073375.

It is an arithmetic number, because the mean of its divisors is an integer number (12956073375).

Almost surely, 2^25912146749 is an apocalyptic number.

It is an amenable number.

25912146749 is a deficient number, since it is larger than the sum of its proper divisors (1).

25912146749 is an equidigital number, since it uses as much as digits as its factorization.

25912146749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The spelling of 25912146749 in words is "twenty-five billion, nine hundred twelve million, one hundred forty-six thousand, seven hundred forty-nine".