40123025 has 12 divisors (see below), whose sum is σ = 50045532. Its totient is φ = 31909440.

The previous prime is 40123001. The next prime is 40123049. The reversal of 40123025 is 52032104.

It is an interprime number because it is at equal distance from previous prime (40123001) and next prime (40123049).

It can be written as a sum of positive squares in 6 ways, for example, as 2876416 + 37246609 = 1696^2 + 6103^2 .

It is not a de Polignac number, because 40123025 - 2⁸ = 40122769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40122994 and 40123012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314 + ... + 8963.

It is an arithmetic number, because the mean of its divisors is an integer number (4170461).

Almost surely, 2^40123025 is an apocalyptic number.

It is an amenable number.

40123025 is a deficient number, since it is larger than the sum of its proper divisors (9922507).

40123025 is a wasteful number, since it uses less digits than its factorization.

40123025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9460 (or 9455 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40123025 is about 6334.2738336766. The cubic root of 40123025 is about 342.3454468116.

Adding to 40123025 its reverse (52032104), we get a palindrome (92155129).

The spelling of 40123025 in words is "forty million, one hundred twenty-three thousand, twenty-five".