40140025 has 12 divisors (see below), whose sum is σ = 50988924. Its totient is φ = 31328000.

The previous prime is 40140019. The next prime is 40140047. The reversal of 40140025 is 52004104.

It can be written as a sum of positive squares in 6 ways, for example, as 7513081 + 32626944 = 2741^2 + 5712^2 .

It is not a de Polignac number, because 40140025 - 2³ = 40140017 is a prime.

It is a super-2 number, since 2×40140025² = 3222443214001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40139990 and 40140008.

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, 18556 + ... + 20605.

It is an arithmetic number, because the mean of its divisors is an integer number (4249077).

Almost surely, 2^40140025 is an apocalyptic number.

It is an amenable number.

40140025 is a deficient number, since it is larger than the sum of its proper divisors (10848899).

40140025 is a wasteful number, since it uses less digits than its factorization.

40140025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39212 (or 39207 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40140025 is about 6335.6155975564. The cubic root of 40140025 is about 342.3937902157.

Adding to 40140025 its reverse (52004104), we get a palindrome (92144129).

The spelling of 40140025 in words is "forty million, one hundred forty thousand, twenty-five".