245251120225 has 12 divisors (see below), whose sum is σ = 304126455420. Its totient is φ = 196191176000.

The previous prime is 245251120217. The next prime is 245251120253. The reversal of 245251120225 is 522021152542.

It can be written as a sum of positive squares in 6 ways, for example, as 61264170256 + 183986949969 = 247516^2 + 428937^2 .

It is not a de Polignac number, because 245251120225 - 2³ = 245251120217 is a prime.

It is a super-2 number, since 2×245251120225² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 295071 + ... + 759979.

It is an arithmetic number, because the mean of its divisors is an integer number (25343871285).

Almost surely, 2^245251120225 is an apocalyptic number.

245251120225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

245251120225 is a deficient number, since it is larger than the sum of its proper divisors (58875335195).

245251120225 is a wasteful number, since it uses less digits than its factorization.

245251120225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486020 (or 486015 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 245251120225 its reverse (522021152542), we get a palindrome (767272272767).

The spelling of 245251120225 in words is "two hundred forty-five billion, two hundred fifty-one million, one hundred twenty thousand, two hundred twenty-five".