406738725 has 24 divisors (see below), whose sum is σ = 673325952. Its totient is φ = 216652800.

The previous prime is 406738721. The next prime is 406738727. The reversal of 406738725 is 527837604.

It is not a de Polignac number, because 406738725 - 2² = 406738721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406738721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65349 + ... + 71301.

It is an arithmetic number, because the mean of its divisors is an integer number (28055248).

Almost surely, 2^406738725 is an apocalyptic number.

It is an amenable number.

406738725 is a deficient number, since it is larger than the sum of its proper divisors (266587227).

406738725 is a wasteful number, since it uses less digits than its factorization.

406738725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6877 (or 6872 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 406738725 is about 20167.7645017984. The cubic root of 406738725 is about 740.9208921142.

The spelling of 406738725 in words is "four hundred six million, seven hundred thirty-eight thousand, seven hundred twenty-five".