40125553 has 8 divisors (see below), whose sum is σ = 43265768. Its totient is φ = 36993024.

The previous prime is 40125541. The next prime is 40125581. The reversal of 40125553 is 35552104.

It can be written as a sum of positive squares in 4 ways, for example, as 31329 + 40094224 = 177^2 + 6332^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40125553 - 2⁵ = 40125521 is a prime.

It is a super-2 number, since 2×40125553² = 3220120007111618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40125053) 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, 13651 + ... + 16327.

It is an arithmetic number, because the mean of its divisors is an integer number (5408221).

Almost surely, 2^40125553 is an apocalyptic number.

It is an amenable number.

40125553 is a deficient number, since it is larger than the sum of its proper divisors (3140215).

40125553 is a wasteful number, since it uses less digits than its factorization.

40125553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3843.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 40125553 is about 6334.4733798478. The cubic root of 40125553 is about 342.3526366244.

Adding to 40125553 its reverse (35552104), we get a palindrome (75677657).

The spelling of 40125553 in words is "forty million, one hundred twenty-five thousand, five hundred fifty-three".