12252497481 has 75 divisors (see below), whose sum is σ = 21437770013. Its totient is φ = 6973533000.

The previous prime is 12252497473. The next prime is 12252497507. The reversal of 12252497481 is 18479425221.

The square root of 12252497481 is 110691.

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

12252497481 is a `hidden beast` number, since 122 + 5 + 2 + 49 + 7 + 481 = 666.

It is not a de Polignac number, because 12252497481 - 2³ = 12252497473 is a prime.

It is a super-2 number, since 2×12252497481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12252417481) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 48814606 + ... + 48814856.

Almost surely, 2^12252497481 is an apocalyptic number.

12252497481 is the 110691-st square number.

12252497481 is the 55346-th centered octagonal number.

It is an amenable number.

12252497481 is a deficient number, since it is larger than the sum of its proper divisors (9185272532).

12252497481 is an frugal number, since it uses more digits than its factorization.

12252497481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 261 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 12252497481 in words is "twelve billion, two hundred fifty-two million, four hundred ninety-seven thousand, four hundred eighty-one".