11525674661 has 2 divisors, whose sum is σ = 11525674662. Its totient is φ = 11525674660.

The previous prime is 11525674651. The next prime is 11525674663. The reversal of 11525674661 is 16647652511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9858504100 + 1667170561 = 99290^2 + 40831^2 .

It is a cyclic number.

It is not a de Polignac number, because 11525674661 - 2¹⁸ = 11525412517 is a prime.

Together with 11525674663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11525674663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5762837330 + 5762837331.

It is an arithmetic number, because the mean of its divisors is an integer number (5762837331).

Almost surely, 2^11525674661 is an apocalyptic number.

It is an amenable number.

11525674661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11525674661 is an equidigital number, since it uses as much as digits as its factorization.

11525674661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The spelling of 11525674661 in words is "eleven billion, five hundred twenty-five million, six hundred seventy-four thousand, six hundred sixty-one".