245169561251 has 2 divisors, whose sum is σ = 245169561252. Its totient is φ = 245169561250.

The previous prime is 245169561199. The next prime is 245169561257. The reversal of 245169561251 is 152165961542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245169561251 - 2³⁰ = 244095819427 is a prime.

It is a super-2 number, since 2×245169561251² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245169561196 and 245169561205.

It is not a weakly prime, because it can be changed into another prime (245169561257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122584780625 + 122584780626.

It is an arithmetic number, because the mean of its divisors is an integer number (122584780626).

Almost surely, 2^245169561251 is an apocalyptic number.

245169561251 is a deficient number, since it is larger than the sum of its proper divisors (1).

245169561251 is an equidigital number, since it uses as much as digits as its factorization.

245169561251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 47.

The spelling of 245169561251 in words is "two hundred forty-five billion, one hundred sixty-nine million, five hundred sixty-one thousand, two hundred fifty-one".