30725400051 has 6 divisors (see below), whose sum is σ = 44381133420. Its totient is φ = 20483600028.

The previous prime is 30725400031. The next prime is 30725400067. The reversal of 30725400051 is 15000452703.

It is a happy number.

30725400051 is a `hidden beast` number, since 3 + 0 + 72 + 540 + 0 + 0 + 51 = 666.

It is not a de Polignac number, because 30725400051 - 2⁹ = 30725399539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30725399988 and 30725400024.

It is not an unprimeable number, because it can be changed into a prime (30725400031) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1706966661 + ... + 1706966678.

It is an arithmetic number, because the mean of its divisors is an integer number (7396855570).

Almost surely, 2^30725400051 is an apocalyptic number.

30725400051 is a deficient number, since it is larger than the sum of its proper divisors (13655733369).

30725400051 is a wasteful number, since it uses less digits than its factorization.

30725400051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413933345 (or 3413933342 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

Adding to 30725400051 its reverse (15000452703), we get a palindrome (45725852754).

The spelling of 30725400051 in words is "thirty billion, seven hundred twenty-five million, four hundred thousand, fifty-one".