405725867464 has 8 divisors (see below), whose sum is σ = 760736001510. Its totient is φ = 202862933728.

The previous prime is 405725867441. The next prime is 405725867467. The reversal of 405725867464 is 464768527504.

It can be written as a sum of positive squares in only one way, i.e., 294208608100 + 111517259364 = 542410^2 + 333942^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×405725867464² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405725867399 and 405725867408.

It is not an unprimeable number, because it can be changed into a prime (405725867467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25357866709 + ... + 25357866724.

Almost surely, 2^405725867464 is an apocalyptic number.

It is an amenable number.

405725867464 is a deficient number, since it is larger than the sum of its proper divisors (355010134046).

405725867464 is a wasteful number, since it uses less digits than its factorization.

405725867464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50715733439 (or 50715733435 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 58.

The spelling of 405725867464 in words is "four hundred five billion, seven hundred twenty-five million, eight hundred sixty-seven thousand, four hundred sixty-four".