2251565165050 has 24 divisors (see below), whose sum is σ = 4187961195516. Its totient is φ = 900615315840.

The previous prime is 2251565164999. The next prime is 2251565165071. The reversal of 2251565165050 is 505615651522.

It can be written as a sum of positive squares in 6 ways, for example, as 969513960321 + 1282051204729 = 984639^2 + 1132277^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2251565164988 and 2251565165006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4975014 + ... + 5408686.

Almost surely, 2^{2251565165050} is an apocalyptic number.

2251565165050 is a deficient number, since it is larger than the sum of its proper divisors (1936396030466).

2251565165050 is a wasteful number, since it uses less digits than its factorization.

2251565165050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537522 (or 537517 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 43.

The spelling of 2251565165050 in words is "two trillion, two hundred fifty-one billion, five hundred sixty-five million, one hundred sixty-five thousand, fifty".