51279466420925 has 12 divisors (see below), whose sum is σ = 63602922542676. Its totient is φ = 41013002697600.

The previous prime is 51279466420907. The next prime is 51279466420933. The reversal of 51279466420925 is 52902466497215.

It can be written as a sum of positive squares in 6 ways, for example, as 8829824136004 + 42449642284921 = 2971502^2 + 6515339^2 .

It is not a de Polignac number, because 51279466420925 - 2²⁸ = 51279197985469 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 264162014 + ... + 264356063.

It is an arithmetic number, because the mean of its divisors is an integer number (5300243545223).

Almost surely, 2^{51279466420925} is an apocalyptic number.

It is an amenable number.

51279466420925 is a deficient number, since it is larger than the sum of its proper divisors (12323456121751).

51279466420925 is a wasteful number, since it uses less digits than its factorization.

51279466420925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528521968 (or 528521963 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 51279466420925 in words is "fifty-one trillion, two hundred seventy-nine billion, four hundred sixty-six million, four hundred twenty thousand, nine hundred twenty-five".