11287825649 has 2 divisors, whose sum is σ = 11287825650. Its totient is φ = 11287825648.

The previous prime is 11287825559. The next prime is 11287825657. The reversal of 11287825649 is 94652878211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10363240000 + 924585649 = 101800^2 + 30407^2 .

It is a cyclic number.

It is not a de Polignac number, because 11287825649 - 2¹² = 11287821553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11287825649.

It is not a weakly prime, because it can be changed into another prime (11287825049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5643912824 + 5643912825.

It is an arithmetic number, because the mean of its divisors is an integer number (5643912825).

Almost surely, 2^11287825649 is an apocalyptic number.

It is an amenable number.

11287825649 is a deficient number, since it is larger than the sum of its proper divisors (1).

11287825649 is an equidigital number, since it uses as much as digits as its factorization.

11287825649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 53.

The spelling of 11287825649 in words is "eleven billion, two hundred eighty-seven million, eight hundred twenty-five thousand, six hundred forty-nine".