40451025 has 12 divisors (see below), whose sum is σ = 66879152. Its totient is φ = 21573840.

The previous prime is 40451023. The next prime is 40451053. The reversal of 40451025 is 52015404.

It is not a de Polignac number, because 40451025 - 2¹ = 40451023 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 = 40450992 and 40451010.

It is not an unprimeable number, because it can be changed into a prime (40451023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269599 + ... + 269748.

Almost surely, 2^40451025 is an apocalyptic number.

It is an amenable number.

40451025 is a deficient number, since it is larger than the sum of its proper divisors (26428127).

40451025 is a wasteful number, since it uses less digits than its factorization.

40451025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539360 (or 539355 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40451025 is about 6360.1120273152. The cubic root of 40451025 is about 343.2757913013.

Adding to 40451025 its reverse (52015404), we get a palindrome (92466429).

The spelling of 40451025 in words is "forty million, four hundred fifty-one thousand, twenty-five".