40064200025 has 6 divisors (see below), whose sum is σ = 49679608062. Its totient is φ = 32051360000.

The previous prime is 40064200021. The next prime is 40064200073. The reversal of 40064200025 is 52000246004.

It can be written as a sum of positive squares in 3 ways, for example, as 4482168601 + 35582031424 = 66949^2 + 188632^2 .

It is not a de Polignac number, because 40064200025 - 2² = 40064200021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40064200021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 801283976 + ... + 801284025.

It is an arithmetic number, because the mean of its divisors is an integer number (8279934677).

Almost surely, 2^40064200025 is an apocalyptic number.

It is an amenable number.

40064200025 is a deficient number, since it is larger than the sum of its proper divisors (9615408037).

40064200025 is a wasteful number, since it uses less digits than its factorization.

40064200025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602568011 (or 1602568006 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 40064200025 its reverse (52000246004), we get a palindrome (92064446029).

The spelling of 40064200025 in words is "forty billion, sixty-four million, two hundred thousand, twenty-five".