731432025 has 45 divisors (see below), whose sum is σ = 1357123053. Its totient is φ = 389448000.

The previous prime is 731431957. The next prime is 731432033. The reversal of 731432025 is 520234137.

The square root of 731432025 is 27045.

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

731432025 is a `hidden beast` number, since 7 + 314 + 320 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 38900169 + 692531856 = 6237^2 + 26316^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is a de Polignac number, because none of the positive numbers 2^k-731432025 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 731432025.

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, 1216725 + ... + 1217325.

Almost surely, 2^731432025 is an apocalyptic number.

731432025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

731432025 is the 27045-th square number.

731432025 is the 13523-rd centered octagonal number.

It is an amenable number.

731432025 is a deficient number, since it is larger than the sum of its proper divisors (625691028).

731432025 is an frugal number, since it uses more digits than its factorization.

731432025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The cubic root of 731432025 is about 900.9997224278. Note that the first 3 decimals are identical.

The spelling of 731432025 in words is "seven hundred thirty-one million, four hundred thirty-two thousand, twenty-five".