40216025 has 12 divisors (see below), whose sum is σ = 49999404. Its totient is φ = 32088000.

The previous prime is 40215997. The next prime is 40216031. The reversal of 40216025 is 52061204.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2859481 + 37356544 = 1691^2 + 6112^2 .

It is not a de Polignac number, because 40216025 - 2¹⁶ = 40150489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40215988 and 40216006.

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, 8615 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (4166617).

Almost surely, 2^40216025 is an apocalyptic number.

It is an amenable number.

40216025 is a deficient number, since it is larger than the sum of its proper divisors (9783379).

40216025 is a wasteful number, since it uses less digits than its factorization.

40216025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252 (or 4247 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40216025 is about 6341.6105998398. The cubic root of 40216025 is about 342.6097469176.

Adding to 40216025 its reverse (52061204), we get a palindrome (92277229).

The spelling of 40216025 in words is "forty million, two hundred sixteen thousand, twenty-five".