51554440125 has 96 divisors (see below), whose sum is σ = 99790838784. Its totient is φ = 25513152000.

The previous prime is 51554440103. The next prime is 51554440151. The reversal of 51554440125 is 52104445515.

51554440125 is a `hidden beast` number, since 51 + 5 + 544 + 40 + 1 + 25 = 666.

It is not a de Polignac number, because 51554440125 - 2⁸ = 51554439869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51554440125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1338892 + ... + 1376858.

It is an arithmetic number, because the mean of its divisors is an integer number (1039487904).

Almost surely, 2^51554440125 is an apocalyptic number.

It is an amenable number.

51554440125 is a deficient number, since it is larger than the sum of its proper divisors (48236398659).

51554440125 is a wasteful number, since it uses less digits than its factorization.

51554440125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38076 (or 38063 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 51554440125 in words is "fifty-one billion, five hundred fifty-four million, four hundred forty thousand, one hundred twenty-five".