8137502272525 has 24 divisors (see below), whose sum is σ = 10108975732904. Its totient is φ = 6498090086400.

The previous prime is 8137502272489. The next prime is 8137502272541. The reversal of 8137502272525 is 5252722057318.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 752141642121 + 7385360630404 = 867261^2 + 2717602^2 .

It is not a de Polignac number, because 8137502272525 - 2⁹ = 8137502272013 is a prime.

It is a Duffinian number.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 53084389 + ... + 53237461.

Almost surely, 2^{8137502272525} is an apocalyptic number.

It is an amenable number.

8137502272525 is a deficient number, since it is larger than the sum of its proper divisors (1971473460379).

8137502272525 is a wasteful number, since it uses less digits than its factorization.

8137502272525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156961 (or 156956 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 49.

The spelling of 8137502272525 in words is "eight trillion, one hundred thirty-seven billion, five hundred two million, two hundred seventy-two thousand, five hundred twenty-five".