40391503056825 has 12 divisors (see below), whose sum is σ = 66780618387408. Its totient is φ = 21542134963600.

The previous prime is 40391503056769. The next prime is 40391503056907. The reversal of 40391503056825 is 52865030519304.

It is not a de Polignac number, because 40391503056825 - 2⁹ = 40391503056313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269276686971 + ... + 269276687120.

It is an arithmetic number, because the mean of its divisors is an integer number (5565051532284).

Almost surely, 2^{40391503056825} is an apocalyptic number.

It is an amenable number.

40391503056825 is a deficient number, since it is larger than the sum of its proper divisors (26389115330583).

40391503056825 is a wasteful number, since it uses less digits than its factorization.

40391503056825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538553374104 (or 538553374099 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 40391503056825 in words is "forty trillion, three hundred ninety-one billion, five hundred three million, fifty-six thousand, eight hundred twenty-five".