405964725 has 24 divisors (see below), whose sum is σ = 681221280. Its totient is φ = 213280320.

The previous prime is 405964721. The next prime is 405964729. The reversal of 405964725 is 527469504.

It is an interprime number because it is at equal distance from previous prime (405964721) and next prime (405964729).

It is not a de Polignac number, because 405964725 - 2² = 405964721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405964721) 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, 35370 + ... + 45419.

It is an arithmetic number, because the mean of its divisors is an integer number (28384220).

Almost surely, 2^405964725 is an apocalyptic number.

It is an amenable number.

405964725 is a deficient number, since it is larger than the sum of its proper divisors (275256555).

405964725 is a wasteful number, since it uses less digits than its factorization.

405964725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80869 (or 80864 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 405964725 is about 20148.5663261682. The cubic root of 405964725 is about 740.4506173145.

The spelling of 405964725 in words is "four hundred five million, nine hundred sixty-four thousand, seven hundred twenty-five".