245725936457 has 4 divisors (see below), whose sum is σ = 245766298260. Its totient is φ = 245685574656.

The previous prime is 245725936451. The next prime is 245725936481. The reversal of 245725936457 is 754639527542.

245725936457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 754639527542 = 2 ⋅377319763771.

It can be written as a sum of positive squares in 2 ways, for example, as 20339323456 + 225386613001 = 142616^2 + 474749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245725936457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245725936396 and 245725936405.

It is not an unprimeable number, because it can be changed into a prime (245725936451) 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, 20171768 + ... + 20183945.

It is an arithmetic number, because the mean of its divisors is an integer number (61441574565).

Almost surely, 2^245725936457 is an apocalyptic number.

It is an amenable number.

245725936457 is a deficient number, since it is larger than the sum of its proper divisors (40361803).

245725936457 is an equidigital number, since it uses as much as digits as its factorization.

245725936457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40361802.

The product of its digits is 63504000, while the sum is 59.

The spelling of 245725936457 in words is "two hundred forty-five billion, seven hundred twenty-five million, nine hundred thirty-six thousand, four hundred fifty-seven".