40070725 has 6 divisors (see below), whose sum is σ = 49687730. Its totient is φ = 32056560.

The previous prime is 40070713. The next prime is 40070729. The reversal of 40070725 is 52707004.

40070725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 103041 + 39967684 = 321^2 + 6322^2 .

It is not a de Polignac number, because 40070725 - 2⁹ = 40070213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1602829 = 40070725 / (4 + 0 + 0 + 7 + 0 + 7 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 40070725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40070729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 801390 + ... + 801439.

Almost surely, 2^40070725 is an apocalyptic number.

It is an amenable number.

40070725 is a deficient number, since it is larger than the sum of its proper divisors (9617005).

40070725 is a wasteful number, since it uses less digits than its factorization.

40070725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602839 (or 1602834 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 40070725 is about 6330.1441531769. The cubic root of 40070725 is about 342.1966340702.

Adding to 40070725 its reverse (52707004), we get a palindrome (92777729).

The spelling of 40070725 in words is "forty million, seventy thousand, seven hundred twenty-five".