51257225434 has 4 divisors (see below), whose sum is σ = 76885838154. Its totient is φ = 25628612716.

The previous prime is 51257225423. The next prime is 51257225441. The reversal of 51257225434 is 43452275215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50757837025 + 499388409 = 225295^2 + 22347^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12814306357 + ... + 12814306360.

Almost surely, 2^51257225434 is an apocalyptic number.

51257225434 is a deficient number, since it is larger than the sum of its proper divisors (25628612720).

51257225434 is a wasteful number, since it uses less digits than its factorization.

51257225434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25628612719.

The product of its digits is 336000, while the sum is 40.

The spelling of 51257225434 in words is "fifty-one billion, two hundred fifty-seven million, two hundred twenty-five thousand, four hundred thirty-four".