251251410130450 has 12 divisors (see below), whose sum is σ = 467327622842730. Its totient is φ = 100500564052160.

The previous prime is 251251410130439. The next prime is 251251410130459. The reversal of 251251410130450 is 54031014152152.

It can be written as a sum of positive squares in 3 ways, for example, as 221026232036401 + 30225178094049 = 14866951^2 + 5497743^2 .

It is not an unprimeable number, because it can be changed into a prime (251251410130459) 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 5 ways as a sum of consecutive naturals, for example, 2512514101255 + ... + 2512514101354.

Almost surely, 2^{251251410130450} is an apocalyptic number.

251251410130450 is a deficient number, since it is larger than the sum of its proper divisors (216076212712280).

251251410130450 is a wasteful number, since it uses less digits than its factorization.

251251410130450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025028202621 (or 5025028202616 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 251251410130450 in words is "two hundred fifty-one trillion, two hundred fifty-one billion, four hundred ten million, one hundred thirty thousand, four hundred fifty".