75277225 has 12 divisors (see below), whose sum is σ = 95106636. Its totient is φ = 59084480.

The previous prime is 75277217. The next prime is 75277231. The reversal of 75277225 is 52277257.

It can be written as a sum of positive squares in 6 ways, for example, as 7033104 + 68244121 = 2652^2 + 8261^2 .

It is not a de Polignac number, because 75277225 - 2³ = 75277217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27082 + ... + 29731.

It is an arithmetic number, because the mean of its divisors is an integer number (7925553).

Almost surely, 2^75277225 is an apocalyptic number.

It is an amenable number.

75277225 is a deficient number, since it is larger than the sum of its proper divisors (19829411).

75277225 is a wasteful number, since it uses less digits than its factorization.

75277225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56876 (or 56871 counting only the distinct ones).

The product of its digits is 68600, while the sum is 37.

The square root of 75277225 is about 8676.2448674527. The cubic root of 75277225 is about 422.2352951349.

It can be divided in two parts, 752 and 77225, that added together give a palindrome (77977).

The spelling of 75277225 in words is "seventy-five million, two hundred seventy-seven thousand, two hundred twenty-five".