7429025538 has 128 divisors (see below), whose sum is σ = 18622967040. Its totient is φ = 2175413760.

The previous prime is 7429025521. The next prime is 7429025543. The reversal of 7429025538 is 8355209247.

7429025538 is a `hidden beast` number, since 7 + 4 + 2 + 90 + 2 + 553 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 7429025493 and 7429025502.

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 63 ways as a sum of consecutive naturals, for example, 3449470 + ... + 3451622.

It is an arithmetic number, because the mean of its divisors is an integer number (145491930).

Almost surely, 2^7429025538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7429025538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9311483520).

7429025538 is an abundant number, since it is smaller than the sum of its proper divisors (11193941502).

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

7429025538 is a wasteful number, since it uses less digits than its factorization.

7429025538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369 (or 2363 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 7429025538 is about 86191.7950735451. The cubic root of 7429025538 is about 1951.2396709103.

The spelling of 7429025538 in words is "seven billion, four hundred twenty-nine million, twenty-five thousand, five hundred thirty-eight".