40025015 has 4 divisors (see below), whose sum is σ = 48030024. Its totient is φ = 32020008.

The previous prime is 40024993. The next prime is 40025023. The reversal of 40025015 is 51052004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40025015 - 2¹⁸ = 39762871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40024984 and 40025002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4002497 + ... + 4002506.

It is an arithmetic number, because the mean of its divisors is an integer number (12007506).

Almost surely, 2^40025015 is an apocalyptic number.

40025015 is a deficient number, since it is larger than the sum of its proper divisors (8005009).

40025015 is an equidigital number, since it uses as much as digits as its factorization.

40025015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8005008.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 40025015 is about 6326.5326206383. The cubic root of 40025015 is about 342.0664662263.

Adding to 40025015 its reverse (51052004), we get a palindrome (91077019).

The spelling of 40025015 in words is "forty million, twenty-five thousand, fifteen".