402812355625 has 45 divisors (see below), whose sum is σ = 514104045763. Its totient is φ = 315509636000.

The previous prime is 402812355601. The next prime is 402812355661. The reversal of 402812355625 is 526553218204.

The square root of 402812355625 is 634675.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 223514309529 + 179298046096 = 472773^2 + 423436^2 .

It is not a de Polignac number, because 402812355625 - 2¹¹ = 402812353577 is a prime.

It is a super-2 number, since 2×402812355625² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 840944136 + ... + 840944614.

Almost surely, 2^402812355625 is an apocalyptic number.

402812355625 is the 634675-th square number.

402812355625 is the 317338-th centered octagonal number.

It is an amenable number.

402812355625 is a deficient number, since it is larger than the sum of its proper divisors (111291690138).

402812355625 is an frugal number, since it uses more digits than its factorization.

402812355625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 402812355625 in words is "four hundred two billion, eight hundred twelve million, three hundred fifty-five thousand, six hundred twenty-five".