725194071 has 144 divisors (see below), whose sum is σ = 1382883840. Its totient is φ = 363242880.

The previous prime is 725194069. The next prime is 725194073. The reversal of 725194071 is 170491527.

It is a happy number.

725194071 is a `hidden beast` number, since 72 + 519 + 4 + 0 + 71 = 666.

It is an interprime number because it is at equal distance from previous prime (725194069) and next prime (725194073).

It is not a de Polignac number, because 725194071 - 2¹ = 725194069 is a prime.

It is a super-2 number, since 2×725194071² = 1051812881227106082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725194073) 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 in 143 ways as a sum of consecutive naturals, for example, 10213966 + ... + 10214036.

It is an arithmetic number, because the mean of its divisors is an integer number (9603360).

Almost surely, 2^725194071 is an apocalyptic number.

725194071 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

725194071 is a deficient number, since it is larger than the sum of its proper divisors (657689769).

725194071 is a wasteful number, since it uses less digits than its factorization.

725194071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 725194071 is about 26929.4276025318. The cubic root of 725194071 is about 898.4310405147.

The spelling of 725194071 in words is "seven hundred twenty-five million, one hundred ninety-four thousand, seventy-one".