40021980225 has 24 divisors (see below), whose sum is σ = 66187222080. Its totient is φ = 21339395520.

The previous prime is 40021980221. The next prime is 40021980233. The reversal of 40021980225 is 52208912004.

40021980225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40021980225 - 2² = 40021980221 is a prime.

It is a super-2 number, since 2×40021980225² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40021980221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221956 + ... + 359594.

It is an arithmetic number, because the mean of its divisors is an integer number (2757800920).

Almost surely, 2^40021980225 is an apocalyptic number.

It is an amenable number.

40021980225 is a deficient number, since it is larger than the sum of its proper divisors (26165241855).

40021980225 is a wasteful number, since it uses less digits than its factorization.

40021980225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141529 (or 141524 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 40021980225 in words is "forty billion, twenty-one million, nine hundred eighty thousand, two hundred twenty-five".