671473725 has 48 divisors (see below), whose sum is σ = 1221088512. Its totient is φ = 323516160.

The previous prime is 671473703. The next prime is 671473727. The reversal of 671473725 is 527374176.

It is not a de Polignac number, because 671473725 - 2¹⁰ = 671472701 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671473727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38499 + ... + 53151.

It is an arithmetic number, because the mean of its divisors is an integer number (25439344).

Almost surely, 2^671473725 is an apocalyptic number.

671473725 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

671473725 is a deficient number, since it is larger than the sum of its proper divisors (549614787).

671473725 is a wasteful number, since it uses less digits than its factorization.

671473725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14726 (or 14721 counting only the distinct ones).

The product of its digits is 246960, while the sum is 42.

The square root of 671473725 is about 25912.8100560321. The cubic root of 671473725 is about 875.6751143495.

The spelling of 671473725 in words is "six hundred seventy-one million, four hundred seventy-three thousand, seven hundred twenty-five".