40130225 has 6 divisors (see below), whose sum is σ = 49761510. Its totient is φ = 32104160.

The previous prime is 40130221. The next prime is 40130231. The reversal of 40130225 is 52203104.

It can be written as a sum of positive squares in 3 ways, for example, as 73984 + 40056241 = 272^2 + 6329^2 .

It is not a de Polignac number, because 40130225 - 2² = 40130221 is a prime.

It is a super-2 number, since 2×40130225² = 3220869917101250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40130221) 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, 802580 + ... + 802629.

It is an arithmetic number, because the mean of its divisors is an integer number (8293585).

Almost surely, 2^40130225 is an apocalyptic number.

It is an amenable number.

40130225 is a deficient number, since it is larger than the sum of its proper divisors (9631285).

40130225 is a wasteful number, since it uses less digits than its factorization.

40130225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605219 (or 1605214 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40130225 is about 6334.8421448368. The cubic root of 40130225 is about 342.3659233317.

Adding to 40130225 its reverse (52203104), we get a palindrome (92333329).

The spelling of 40130225 in words is "forty million, one hundred thirty thousand, two hundred twenty-five".