7256450688401 has 4 divisors (see below), whose sum is σ = 7259985249972. Its totient is φ = 7252916126832.

The previous prime is 7256450688379. The next prime is 7256450688407. The reversal of 7256450688401 is 1048860546527.

It is a Cunningham number, because it is equal to 2693780²+1.

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 3745680261376 + 3510770427025 = 1935376^2 + 1873705^2 .

It is a cyclic number.

It is not a de Polignac number, because 7256450688401 - 2⁶ = 7256450688337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7256450688407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1767277706 + ... + 1767281811.

It is an arithmetic number, because the mean of its divisors is an integer number (1814996312493).

Almost surely, 2^{7256450688401} is an apocalyptic number.

It is an amenable number.

7256450688401 is a deficient number, since it is larger than the sum of its proper divisors (3534561571).

7256450688401 is a wasteful number, since it uses less digits than its factorization.

7256450688401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534561570.

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 7256450688401 in words is "seven trillion, two hundred fifty-six billion, four hundred fifty million, six hundred eighty-eight thousand, four hundred one".