725507422 has 8 divisors (see below), whose sum is σ = 1088398872. Its totient is φ = 362707800.

The previous prime is 725507411. The next prime is 725507429. The reversal of 725507422 is 224705527.

It is a happy number.

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

It is a super-2 number, since 2×725507422² = 1052722038754172168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725507429) 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 3 ways as a sum of consecutive naturals, for example, 2397 + ... + 38167.

It is an arithmetic number, because the mean of its divisors is an integer number (136049859).

Almost surely, 2^725507422 is an apocalyptic number.

725507422 is a deficient number, since it is larger than the sum of its proper divisors (362891450).

725507422 is a wasteful number, since it uses less digits than its factorization.

725507422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45914.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 725507422 is about 26935.2449775383. The cubic root of 725507422 is about 898.5604236862.

The spelling of 725507422 in words is "seven hundred twenty-five million, five hundred seven thousand, four hundred twenty-two".