40664177725 has 24 divisors (see below), whose sum is σ = 52189461000. Its totient is φ = 31393232640.

The previous prime is 40664177681. The next prime is 40664177753. The reversal of 40664177725 is 52777146604.

It can be written as a sum of positive squares in 12 ways, for example, as 21431203236 + 19232974489 = 146394^2 + 138683^2 .

It is not a de Polignac number, because 40664177725 - 2¹⁵ = 40664144957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1486471 + ... + 1513579.

It is an arithmetic number, because the mean of its divisors is an integer number (2174560875).

Almost surely, 2^40664177725 is an apocalyptic number.

It is an amenable number.

40664177725 is a deficient number, since it is larger than the sum of its proper divisors (11525283275).

40664177725 is a wasteful number, since it uses less digits than its factorization.

40664177725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29217 (or 29212 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 40664177725 in words is "forty billion, six hundred sixty-four million, one hundred seventy-seven thousand, seven hundred twenty-five".