75777025 has 9 divisors (see below), whose sum is σ = 94017513. Its totient is φ = 60586800.

The previous prime is 75777001. The next prime is 75777047. The reversal of 75777025 is 52077757.

The square root of 75777025 is 8705.

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 46009089 + 29767936 = 6783^2 + 5456^2 .

It is not a de Polignac number, because 75777025 - 2¹¹ = 75774977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 42655 + ... + 44395.

Almost surely, 2^75777025 is an apocalyptic number.

75777025 is the 8705-th square number.

75777025 is the 4353-rd centered octagonal number.

It is an amenable number.

75777025 is a deficient number, since it is larger than the sum of its proper divisors (18240488).

75777025 is an frugal number, since it uses more digits than its factorization.

75777025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 120050, while the sum is 40.

The cubic root of 75777025 is about 423.1677058207.

The spelling of 75777025 in words is "seventy-five million, seven hundred seventy-seven thousand, twenty-five".