40387903912625 has 8 divisors (see below), whose sum is σ = 50404104083112. Its totient is φ = 32310323130000.

The previous prime is 40387903912621. The next prime is 40387903912663. The reversal of 40387903912625 is 52621930978304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3601641044401 + 36786262868224 = 1897799^2 + 6065168^2 .

It is not a de Polignac number, because 40387903912625 - 2² = 40387903912621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40387903912621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161551615526 + ... + 161551615775.

It is an arithmetic number, because the mean of its divisors is an integer number (6300513010389).

It is a 1-persistent number, because it is pandigital, but 2⋅40387903912625 = 80775807825250 is not.

Almost surely, 2^{40387903912625} is an apocalyptic number.

It is an amenable number.

40387903912625 is a deficient number, since it is larger than the sum of its proper divisors (10016200170487).

40387903912625 is an equidigital number, since it uses as much as digits as its factorization.

40387903912625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323103231316 (or 323103231306 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 59.

The spelling of 40387903912625 in words is "forty trillion, three hundred eighty-seven billion, nine hundred three million, nine hundred twelve thousand, six hundred twenty-five".