245120145525 has 18 divisors (see below), whose sum is σ = 439037416610. Its totient is φ = 130730744160.

The previous prime is 245120145521. The next prime is 245120145533. The reversal of 245120145525 is 525541021542.

245120145525 is a `hidden beast` number, since 2 + 4 + 5 + 120 + 1 + 4 + 5 + 525 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 44123943249 + 200996202276 = 210057^2 + 448326^2 .

It is not a de Polignac number, because 245120145525 - 2² = 245120145521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245120145525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245120145521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 544711210 + ... + 544711659.

Almost surely, 2^245120145525 is an apocalyptic number.

245120145525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245120145525 is a deficient number, since it is larger than the sum of its proper divisors (193917271085).

245120145525 is a wasteful number, since it uses less digits than its factorization.

245120145525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089422885 (or 1089422877 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 245120145525 in words is "two hundred forty-five billion, one hundred twenty million, one hundred forty-five thousand, five hundred twenty-five".