40025140 has 24 divisors (see below), whose sum is σ = 88997832. Its totient is φ = 15068160.

The previous prime is 40025119. The next prime is 40025147. The reversal of 40025140 is 4152004.

It can be written as a sum of positive squares in 4 ways, for example, as 7717284 + 32307856 = 2778^2 + 5684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40025147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58521 + ... + 59200.

It is an arithmetic number, because the mean of its divisors is an integer number (3708243).

Almost surely, 2^40025140 is an apocalyptic number.

It is an amenable number.

40025140 is an abundant number, since it is smaller than the sum of its proper divisors (48972692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40025140 is a wasteful number, since it uses less digits than its factorization.

40025140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117747 (or 117745 counting only the distinct ones).

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

The square root of 40025140 is about 6326.5424996597. The cubic root of 40025140 is about 342.0668223225.

Adding to 40025140 its reverse (4152004), we get a palindrome (44177144).

The spelling of 40025140 in words is "forty million, twenty-five thousand, one hundred forty".