40525215 has 16 divisors (see below), whose sum is σ = 66932736. Its totient is φ = 20916000.

The previous prime is 40525213. The next prime is 40525273. The reversal of 40525215 is 51252504.

It is a happy number.

It is not a de Polignac number, because 40525215 - 2¹ = 40525213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40525213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43111 + ... + 44040.

It is an arithmetic number, because the mean of its divisors is an integer number (4183296).

Almost surely, 2^40525215 is an apocalyptic number.

40525215 is a deficient number, since it is larger than the sum of its proper divisors (26407521).

40525215 is a wasteful number, since it uses less digits than its factorization.

40525215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87190.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 40525215 is about 6365.9417999225. The cubic root of 40525215 is about 343.4855270414.

Adding to 40525215 its reverse (51252504), we get a palindrome (91777719).

The spelling of 40525215 in words is "forty million, five hundred twenty-five thousand, two hundred fifteen".