40046951925 has 72 divisors (see below), whose sum is σ = 73787001288. Its totient is φ = 20749824000.

The previous prime is 40046951899. The next prime is 40046951927. The reversal of 40046951925 is 52915964004.

It can be written as a sum of positive squares in 12 ways, for example, as 6849383121 + 33197568804 = 82761^2 + 182202^2 .

It is not a de Polignac number, because 40046951925 - 2⁷ = 40046951797 is a prime.

It is a super-2 number, since 2×40046951925² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40046951927) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2214219 + ... + 2232231.

Almost surely, 2^40046951925 is an apocalyptic number.

40046951925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40046951925 is a deficient number, since it is larger than the sum of its proper divisors (33740049363).

40046951925 is a wasteful number, since it uses less digits than its factorization.

40046951925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18311 (or 18303 counting only the distinct ones).

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

The spelling of 40046951925 in words is "forty billion, forty-six million, nine hundred fifty-one thousand, nine hundred twenty-five".