725156746 has 4 divisors (see below), whose sum is σ = 1087735122. Its totient is φ = 362578372.

The previous prime is 725156723. The next prime is 725156767. The reversal of 725156746 is 647651527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 647651527 = 24859 ⋅26053.

It can be written as a sum of positive squares in only one way, i.e., 562211521 + 162945225 = 23711^2 + 12765^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181289185 + ... + 181289188.

Almost surely, 2^725156746 is an apocalyptic number.

725156746 is a deficient number, since it is larger than the sum of its proper divisors (362578376).

725156746 is a wasteful number, since it uses less digits than its factorization.

725156746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362578375.

The product of its digits is 352800, while the sum is 43.

The square root of 725156746 is about 26928.7345785130. The cubic root of 725156746 is about 898.4156264735.

The spelling of 725156746 in words is "seven hundred twenty-five million, one hundred fifty-six thousand, seven hundred forty-six".