40609451925 has 144 divisors (see below), whose sum is σ = 91349659200. Its totient is φ = 17586979200.

The previous prime is 40609451899. The next prime is 40609452089. The reversal of 40609451925 is 52915490604.

40609451925 is a `hidden beast` number, since 4 + 0 + 609 + 4 + 5 + 19 + 25 = 666.

It is not a de Polignac number, because 40609451925 - 2¹⁴ = 40609435541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 596115 + ... + 660735.

Almost surely, 2^40609451925 is an apocalyptic number.

40609451925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40609451925 is an abundant number, since it is smaller than the sum of its proper divisors (50740207275).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40609451925 is a wasteful number, since it uses less digits than its factorization.

40609451925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64673 (or 64655 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 40609451925 in words is "forty billion, six hundred nine million, four hundred fifty-one thousand, nine hundred twenty-five".