245525765137 has 4 divisors (see below), whose sum is σ = 246166824960. Its totient is φ = 244884705316.

The previous prime is 245525765131. The next prime is 245525765143. The reversal of 245525765137 is 731567525542.

245525765137 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (245525765131) and next prime (245525765143).

It is a cyclic number.

It is not a de Polignac number, because 245525765137 - 2²³ = 245517376529 is a prime.

It is a super-2 number, since 2×245525765137² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245525765131) 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, 320529337 + ... + 320530102.

It is an arithmetic number, because the mean of its divisors is an integer number (61541706240).

Almost surely, 2^245525765137 is an apocalyptic number.

It is an amenable number.

245525765137 is a deficient number, since it is larger than the sum of its proper divisors (641059823).

245525765137 is an equidigital number, since it uses as much as digits as its factorization.

245525765137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641059822.

The product of its digits is 8820000, while the sum is 52.

The spelling of 245525765137 in words is "two hundred forty-five billion, five hundred twenty-five million, seven hundred sixty-five thousand, one hundred thirty-seven".