1252836481 has 4 divisors (see below), whose sum is σ = 1349208532. Its totient is φ = 1156464432.

The previous prime is 1252836479. The next prime is 1252836499. The reversal of 1252836481 is 1846382521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 171479025 + 1081357456 = 13095^2 + 32884^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252836481 - 2¹ = 1252836479 is a prime.

It is a super-2 number, since 2×1252836481² = 3139198496248926722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252836451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48186006 + ... + 48186031.

It is an arithmetic number, because the mean of its divisors is an integer number (337302133).

Almost surely, 2^1252836481 is an apocalyptic number.

It is an amenable number.

1252836481 is a deficient number, since it is larger than the sum of its proper divisors (96372051).

1252836481 is an equidigital number, since it uses as much as digits as its factorization.

1252836481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96372050.

The product of its digits is 92160, while the sum is 40.

The square root of 1252836481 is about 35395.4302276438. The cubic root of 1252836481 is about 1078.0315312217.

The spelling of 1252836481 in words is "one billion, two hundred fifty-two million, eight hundred thirty-six thousand, four hundred eighty-one".