25115379473 has 2 divisors, whose sum is σ = 25115379474. Its totient is φ = 25115379472.

The previous prime is 25115379449. The next prime is 25115379479. The reversal of 25115379473 is 37497351152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13687128064 + 11428251409 = 116992^2 + 106903^2 .

It is a cyclic number.

It is not a de Polignac number, because 25115379473 - 2²⁴ = 25098602257 is a prime.

It is not a weakly prime, because it can be changed into another prime (25115379479) 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, 12557689736 + 12557689737.

It is an arithmetic number, because the mean of its divisors is an integer number (12557689737).

Almost surely, 2^25115379473 is an apocalyptic number.

It is an amenable number.

25115379473 is a deficient number, since it is larger than the sum of its proper divisors (1).

25115379473 is an equidigital number, since it uses as much as digits as its factorization.

25115379473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 47.

The spelling of 25115379473 in words is "twenty-five billion, one hundred fifteen million, three hundred seventy-nine thousand, four hundred seventy-three".