725178047 has 8 divisors (see below), whose sum is σ = 797642832. Its totient is φ = 659251560.

The previous prime is 725177987. The next prime is 725178107. The reversal of 725178047 is 740871527.

It is an interprime number because it is at equal distance from previous prime (725177987) and next prime (725178107).

It is not a de Polignac number, because 725178047 - 2⁶ = 725177983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725177995 and 725178013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725175047) 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 7 ways as a sum of consecutive naturals, for example, 271088 + ... + 273749.

It is an arithmetic number, because the mean of its divisors is an integer number (99705354).

Almost surely, 2^725178047 is an apocalyptic number.

725178047 is a deficient number, since it is larger than the sum of its proper divisors (72464785).

725178047 is an equidigital number, since it uses as much as digits as its factorization.

725178047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544870 (or 544848 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 41.

The square root of 725178047 is about 26929.1300824962. The cubic root of 725178047 is about 898.4244231757.

The spelling of 725178047 in words is "seven hundred twenty-five million, one hundred seventy-eight thousand, forty-seven".