11725667257 has 4 divisors (see below), whose sum is σ = 11924407440. Its totient is φ = 11526927076.

The previous prime is 11725667231. The next prime is 11725667269. The reversal of 11725667257 is 75276652711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75276652711 = 13 ⋅5790511747.

It is a cyclic number.

It is not a de Polignac number, because 11725667257 - 2¹⁵ = 11725634489 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11725667257.

It is not an unprimeable number, because it can be changed into a prime (11725667357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99370003 + ... + 99370120.

It is an arithmetic number, because the mean of its divisors is an integer number (2981101860).

Almost surely, 2^11725667257 is an apocalyptic number.

It is an amenable number.

11725667257 is a deficient number, since it is larger than the sum of its proper divisors (198740183).

11725667257 is an equidigital number, since it uses as much as digits as its factorization.

11725667257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198740182.

The product of its digits is 1234800, while the sum is 49.

The spelling of 11725667257 in words is "eleven billion, seven hundred twenty-five million, six hundred sixty-seven thousand, two hundred fifty-seven".