51042500025 has 96 divisors (see below), whose sum is σ = 94793932800. Its totient is φ = 24019776000.

The previous prime is 51042499997. The next prime is 51042500081. The reversal of 51042500025 is 52000524015.

It is a happy number.

It is not a de Polignac number, because 51042500025 - 2⁵ = 51042499993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51042499968 and 51042500004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6727384 + ... + 6734966.

It is an arithmetic number, because the mean of its divisors is an integer number (987436800).

Almost surely, 2^51042500025 is an apocalyptic number.

51042500025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51042500025 is a deficient number, since it is larger than the sum of its proper divisors (43751432775).

51042500025 is a wasteful number, since it uses less digits than its factorization.

51042500025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7847 (or 7842 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The spelling of 51042500025 in words is "fifty-one billion, forty-two million, five hundred thousand, twenty-five".