25574131073 has 2 divisors, whose sum is σ = 25574131074. Its totient is φ = 25574131072.

The previous prime is 25574131069. The next prime is 25574131087. The reversal of 25574131073 is 37013147552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17761692529 + 7812438544 = 133273^2 + 88388^2 .

It is a cyclic number.

It is not a de Polignac number, because 25574131073 - 2² = 25574131069 is a prime.

It is not a weakly prime, because it can be changed into another prime (25571131073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12787065536 + 12787065537.

It is an arithmetic number, because the mean of its divisors is an integer number (12787065537).

Almost surely, 2^25574131073 is an apocalyptic number.

It is an amenable number.

25574131073 is a deficient number, since it is larger than the sum of its proper divisors (1).

25574131073 is an equidigital number, since it uses as much as digits as its factorization.

25574131073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 25574131073 in words is "twenty-five billion, five hundred seventy-four million, one hundred thirty-one thousand, seventy-three".