40225121 has 4 divisors (see below), whose sum is σ = 40791744. Its totient is φ = 39658500.

The previous prime is 40225103. The next prime is 40225139. The reversal of 40225121 is 12152204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (40225103) and next prime (40225139).

It is a cyclic number.

It is not a de Polignac number, because 40225121 - 2⁶ = 40225057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40225121.

It is not an unprimeable number, because it can be changed into a prime (40225151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283205 + ... + 283346.

It is an arithmetic number, because the mean of its divisors is an integer number (10197936).

Almost surely, 2^40225121 is an apocalyptic number.

It is an amenable number.

40225121 is a deficient number, since it is larger than the sum of its proper divisors (566623).

40225121 is an equidigital number, since it uses as much as digits as its factorization.

40225121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566622.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40225121 is about 6342.3277272623. The cubic root of 40225121 is about 342.6355752894.

Adding to 40225121 its reverse (12152204), we get a palindrome (52377325).

The spelling of 40225121 in words is "forty million, two hundred twenty-five thousand, one hundred twenty-one".