725153123 has 2 divisors, whose sum is σ = 725153124. Its totient is φ = 725153122.

The previous prime is 725153119. The next prime is 725153137. The reversal of 725153123 is 321351527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725153123 - 2² = 725153119 is a prime.

It is not a weakly prime, because it can be changed into another prime (725153623) by changing a digit.

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 as a sum of consecutive naturals, namely, 362576561 + 362576562.

It is an arithmetic number, because the mean of its divisors is an integer number (362576562).

Almost surely, 2^725153123 is an apocalyptic number.

725153123 is a deficient number, since it is larger than the sum of its proper divisors (1).

725153123 is an equidigital number, since it uses as much as digits as its factorization.

725153123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 29.

The square root of 725153123 is about 26928.6673082795. The cubic root of 725153123 is about 898.4141302612.

The spelling of 725153123 in words is "seven hundred twenty-five million, one hundred fifty-three thousand, one hundred twenty-three".