30725501742 has 96 divisors (see below), whose sum is σ = 76358117472. Its totient is φ = 9198417024.

The previous prime is 30725501731. The next prime is 30725501743. The reversal of 30725501742 is 24710552703.

30725501742 is a `hidden beast` number, since 30 + 7 + 2 + 550 + 1 + 74 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 30725501697 and 30725501706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30725501743) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168048 + ... + 299484.

It is an arithmetic number, because the mean of its divisors is an integer number (795397057).

Almost surely, 2^30725501742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30725501742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38179058736).

30725501742 is an abundant number, since it is smaller than the sum of its proper divisors (45632615730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30725501742 is a wasteful number, since it uses less digits than its factorization.

30725501742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131504 (or 131492 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The spelling of 30725501742 in words is "thirty billion, seven hundred twenty-five million, five hundred one thousand, seven hundred forty-two".