436398966025 has 27 divisors (see below), whose sum is σ = 594850496359. Its totient is φ = 317354642000.

The previous prime is 436398966023. The next prime is 436398966053. The reversal of 436398966025 is 520669893634.

It is a happy number.

The square root of 436398966025 is 660605.

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

It can be written as a sum of positive squares in only one way, i.e., 157103627769 + 279295338256 = 396363^2 + 528484^2 .

It is not a de Polignac number, because 436398966025 - 2¹ = 436398966023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (436398966023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 36327270 + ... + 36339280.

Almost surely, 2^436398966025 is an apocalyptic number.

436398966025 is the 660605-th square number.

436398966025 is the 330303-rd centered octagonal number.

It is an amenable number.

436398966025 is a deficient number, since it is larger than the sum of its proper divisors (158451530334).

436398966025 is an frugal number, since it uses more digits than its factorization.

436398966025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24054 (or 12027 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 61.

The spelling of 436398966025 in words is "four hundred thirty-six billion, three hundred ninety-eight million, nine hundred sixty-six thousand, twenty-five".