40253725 has 6 divisors (see below), whose sum is σ = 49914650. Its totient is φ = 32202960.

The previous prime is 40253713. The next prime is 40253737. The reversal of 40253725 is 52735204.

40253725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40253713) and next prime (40253737).

It can be written as a sum of positive squares in 3 ways, for example, as 32761 + 40220964 = 181^2 + 6342^2 .

It is not a de Polignac number, because 40253725 - 2⁵ = 40253693 is a prime.

It is a super-4 number, since 4×40253725⁴ (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40253693 and 40253702.

It is a congruent number.

It is an unprimeable number.

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, 805050 + ... + 805099.

Almost surely, 2^40253725 is an apocalyptic number.

It is an amenable number.

40253725 is a deficient number, since it is larger than the sum of its proper divisors (9660925).

40253725 is a wasteful number, since it uses less digits than its factorization.

40253725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610159 (or 1610154 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 40253725 is about 6344.5823345591. The cubic root of 40253725 is about 342.7167718615.

Adding to 40253725 its reverse (52735204), we get a palindrome (92988929).

It can be divided in two parts, 4025 and 3725, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 40253725 in words is "forty million, two hundred fifty-three thousand, seven hundred twenty-five".