405325620 has 240 divisors, whose sum is σ = 1501344768. Its totient is φ = 89579520.

The previous prime is 405325607. The next prime is 405325643. The reversal of 405325620 is 26523504.

405325620 is a `hidden beast` number, since 4 + 0 + 5 + 32 + 5 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 350964 + ... + 352116.

Almost surely, 2^405325620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405325620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750672384).

405325620 is an abundant number, since it is smaller than the sum of its proper divisors (1096019148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405325620 is a wasteful number, since it uses less digits than its factorization.

405325620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 405325620 is about 20132.7002659852. The cubic root of 405325620 is about 740.0618526337.

The spelling of 405325620 in words is "four hundred five million, three hundred twenty-five thousand, six hundred twenty".