51451406331025 has 6 divisors (see below), whose sum is σ = 63799743850502. Its totient is φ = 41161125064800.

The previous prime is 51451406331007. The next prime is 51451406331029. The reversal of 51451406331025 is 52013360415415.

It can be written as a sum of positive squares in 3 ways, for example, as 2950043269761 + 48501363061264 = 1717569^2 + 6964292^2 .

It is not a de Polignac number, because 51451406331025 - 2⁷ = 51451406330897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51451406331029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1029028126596 + ... + 1029028126645.

Almost surely, 2^{51451406331025} is an apocalyptic number.

It is an amenable number.

51451406331025 is a deficient number, since it is larger than the sum of its proper divisors (12348337519477).

51451406331025 is a wasteful number, since it uses less digits than its factorization.

51451406331025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058056253251 (or 2058056253246 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 51451406331025 in words is "fifty-one trillion, four hundred fifty-one billion, four hundred six million, three hundred thirty-one thousand, twenty-five".