635147225 has 6 divisors (see below), whose sum is σ = 787582590. Its totient is φ = 508117760.

The previous prime is 635147221. The next prime is 635147239. The reversal of 635147225 is 522741536.

It can be written as a sum of positive squares in 3 ways, for example, as 47375689 + 587771536 = 6883^2 + 24244^2 .

It is not a de Polignac number, because 635147225 - 2² = 635147221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (635147221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12702920 + ... + 12702969.

It is an arithmetic number, because the mean of its divisors is an integer number (131263765).

Almost surely, 2^635147225 is an apocalyptic number.

It is an amenable number.

635147225 is a deficient number, since it is larger than the sum of its proper divisors (152435365).

635147225 is a wasteful number, since it uses less digits than its factorization.

635147225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25405899 (or 25405894 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 635147225 is about 25202.1273903613. The cubic root of 635147225 is about 859.5902252782.

The spelling of 635147225 in words is "six hundred thirty-five million, one hundred forty-seven thousand, two hundred twenty-five".