40402025361 has 12 divisors (see below), whose sum is σ = 58383785460. Its totient is φ = 26923004640.

The previous prime is 40402025357. The next prime is 40402025413. The reversal of 40402025361 is 16352020404.

40402025361 is a `hidden beast` number, since 4 + 0 + 402 + 0 + 253 + 6 + 1 = 666.

40402025361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 23331035025 + 17070990336 = 152745^2 + 130656^2 .

It is not a de Polignac number, because 40402025361 - 2² = 40402025357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40402025341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 951310 + ... + 992871.

It is an arithmetic number, because the mean of its divisors is an integer number (4865315455).

Almost surely, 2^40402025361 is an apocalyptic number.

It is an amenable number.

40402025361 is a deficient number, since it is larger than the sum of its proper divisors (17981760099).

40402025361 is a wasteful number, since it uses less digits than its factorization.

40402025361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946496 (or 1946493 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 40402025361 its reverse (16352020404), we get a palindrome (56754045765).

The spelling of 40402025361 in words is "forty billion, four hundred two million, twenty-five thousand, three hundred sixty-one".