905709025 has 27 divisors (see below), whose sum is σ = 1218747609. Its totient is φ = 667386720.

The previous prime is 905708987. The next prime is 905709067. The reversal of 905709025 is 520907509.

The square root of 905709025 is 30095.

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

It can be written as a sum of positive squares in 4 ways, for example, as 233447841 + 672261184 = 15279^2 + 25928^2 .

It is not a de Polignac number, because 905709025 - 2⁷ = 905708897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1955944 + ... + 1956406.

Almost surely, 2^905709025 is an apocalyptic number.

905709025 is the 30095-th square number.

905709025 is the 15048-th centered octagonal number.

It is an amenable number.

905709025 is a deficient number, since it is larger than the sum of its proper divisors (313038584).

905709025 is an equidigital number, since it uses as much as digits as its factorization.

905709025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 37.

The cubic root of 905709025 is about 967.5265657385.

The spelling of 905709025 in words is "nine hundred five million, seven hundred nine thousand, twenty-five".