40121554225 has 48 divisors (see below), whose sum is σ = 53734060800. Its totient is φ = 29608750080.

The previous prime is 40121554199. The next prime is 40121554241. The reversal of 40121554225 is 52245512104.

It is not a de Polignac number, because 40121554225 - 2³³ = 31531619633 is a prime.

It is a super-2 number, since 2×40121554225² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4662627 + ... + 4671223.

It is an arithmetic number, because the mean of its divisors is an integer number (1119459600).

Almost surely, 2^40121554225 is an apocalyptic number.

It is an amenable number.

40121554225 is a deficient number, since it is larger than the sum of its proper divisors (13612506575).

40121554225 is a wasteful number, since it uses less digits than its factorization.

40121554225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8842 (or 8837 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 40121554225 in words is "forty billion, one hundred twenty-one million, five hundred fifty-four thousand, two hundred twenty-five".