725542538 has 16 divisors (see below), whose sum is σ = 1283910144. Its totient is φ = 300916080.

The previous prime is 725542523. The next prime is 725542549. The reversal of 725542538 is 835245527.

It is a junction number, because it is equal to n+sod(n) for n = 725542495 and 725542504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835445 + ... + 836312.

It is an arithmetic number, because the mean of its divisors is an integer number (80244384).

Almost surely, 2^725542538 is an apocalyptic number.

725542538 is a deficient number, since it is larger than the sum of its proper divisors (558367606).

725542538 is a wasteful number, since it uses less digits than its factorization.

725542538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671797.

The product of its digits is 336000, while the sum is 41.

The square root of 725542538 is about 26935.8968293242. The cubic root of 725542538 is about 898.5749208219.

The spelling of 725542538 in words is "seven hundred twenty-five million, five hundred forty-two thousand, five hundred thirty-eight".