725122142 has 8 divisors (see below), whose sum is σ = 1098896736. Its totient is φ = 358823232.

The previous prime is 725122133. The next prime is 725122169. The reversal of 725122142 is 241221527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1868678 + ... + 1869065.

It is an arithmetic number, because the mean of its divisors is an integer number (137362092).

Almost surely, 2^725122142 is an apocalyptic number.

725122142 is a deficient number, since it is larger than the sum of its proper divisors (373774594).

725122142 is a wasteful number, since it uses less digits than its factorization.

725122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737842.

The product of its digits is 2240, while the sum is 26.

The square root of 725122142 is about 26928.0920601516. The cubic root of 725122142 is about 898.4013356465.

Adding to 725122142 its reverse (241221527), we get a palindrome (966343669).

The spelling of 725122142 in words is "seven hundred twenty-five million, one hundred twenty-two thousand, one hundred forty-two".