51244442425 has 24 divisors (see below), whose sum is σ = 69825789792. Its totient is φ = 36996624000.

The previous prime is 51244442419. The next prime is 51244442441. The reversal of 51244442425 is 52424444215.

It is not a de Polignac number, because 51244442425 - 2⁷ = 51244442297 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 642411 + ... + 717760.

It is an arithmetic number, because the mean of its divisors is an integer number (2909407908).

Almost surely, 2^51244442425 is an apocalyptic number.

51244442425 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51244442425 is a deficient number, since it is larger than the sum of its proper divisors (18581347367).

51244442425 is a wasteful number, since it uses less digits than its factorization.

51244442425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360329 (or 1360324 counting only the distinct ones).

The product of its digits is 204800, while the sum is 37.

The spelling of 51244442425 in words is "fifty-one billion, two hundred forty-four million, four hundred forty-two thousand, four hundred twenty-five".