1525247230081 has 9 divisors (see below), whose sum is σ = 1576075460673. Its totient is φ = 1476008656260.

The previous prime is 1525247230079. The next prime is 1525247230093. The reversal of 1525247230081 is 1800327425251.

The square root of 1525247230081 is 1235009.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1525247230081 - 2¹ = 1525247230079 is a prime.

It is a super-2 number, since 2×1525247230081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1525247230051) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 38265360 + ... + 38305198.

Almost surely, 2^{1525247230081} is an apocalyptic number.

1525247230081 is the 1235009-th square number.

1525247230081 is the 617505-th centered octagonal number.

It is an amenable number.

1525247230081 is a deficient number, since it is larger than the sum of its proper divisors (50828230592).

1525247230081 is an frugal number, since it uses more digits than its factorization.

1525247230081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79740 (or 39870 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 1525247230081 in words is "one trillion, five hundred twenty-five billion, two hundred forty-seven million, two hundred thirty thousand, eighty-one".