40180625 has 20 divisors (see below), whose sum is σ = 51199236. Its totient is φ = 31512000.

The previous prime is 40180607. The next prime is 40180633. The reversal of 40180625 is 52608104.

It can be written as a sum of positive squares in 10 ways, for example, as 36084049 + 4096576 = 6007^2 + 2024^2 .

It is not a de Polignac number, because 40180625 - 2¹² = 40176529 is a prime.

It is a super-2 number, since 2×40180625² = 3228965250781250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40180594 and 40180603.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32519 + ... + 33731.

Almost surely, 2^40180625 is an apocalyptic number.

It is an amenable number.

40180625 is a deficient number, since it is larger than the sum of its proper divisors (11018611).

40180625 is an equidigital number, since it uses as much as digits as its factorization.

40180625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 40180625 is about 6338.8188962929. The cubic root of 40180625 is about 342.5091904402.

Adding to 40180625 its reverse (52608104), we get a palindrome (92788729).

The spelling of 40180625 in words is "forty million, one hundred eighty thousand, six hundred twenty-five".