634365343360025 has 6 divisors (see below), whose sum is σ = 786613025766462. Its totient is φ = 507492274688000.

The previous prime is 634365343360019. The next prime is 634365343360109. The reversal of 634365343360025 is 520063343563436.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 87167468667904 + 547197874692121 = 9336352^2 + 23392261^2 .

It is not a de Polignac number, because 634365343360025 - 2⁶ = 634365343359961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12687306867176 + ... + 12687306867225.

It is an arithmetic number, because the mean of its divisors is an integer number (131102170961077).

Almost surely, 2^{634365343360025} is an apocalyptic number.

It is an amenable number.

634365343360025 is a deficient number, since it is larger than the sum of its proper divisors (152247682406437).

634365343360025 is a wasteful number, since it uses less digits than its factorization.

634365343360025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25374613734411 (or 25374613734406 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 53.

The spelling of 634365343360025 in words is "six hundred thirty-four trillion, three hundred sixty-five billion, three hundred forty-three million, three hundred sixty thousand, twenty-five".