40425515 has 16 divisors (see below), whose sum is σ = 52435488. Its totient is φ = 29742336.

The previous prime is 40425433. The next prime is 40425527. The reversal of 40425515 is 51552404.

It is not a de Polignac number, because 40425515 - 2¹⁸ = 40163371 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19352 + ... + 21338.

It is an arithmetic number, because the mean of its divisors is an integer number (3277218).

Almost surely, 2^40425515 is an apocalyptic number.

40425515 is a deficient number, since it is larger than the sum of its proper divisors (12009973).

40425515 is a wasteful number, since it uses less digits than its factorization.

40425515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 40425515 is about 6358.1062432142. The cubic root of 40425515 is about 343.2036150758.

Adding to 40425515 its reverse (51552404), we get a palindrome (91977919).

The spelling of 40425515 in words is "forty million, four hundred twenty-five thousand, five hundred fifteen".