400155515125 has 64 divisors (see below), whose sum is σ = 530654252544. Its totient is φ = 300626726400.

The previous prime is 400155515119. The next prime is 400155515147. The reversal of 400155515125 is 521515551004.

It is not a de Polignac number, because 400155515125 - 2⁹ = 400155514613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60288307 + ... + 60294943.

It is an arithmetic number, because the mean of its divisors is an integer number (8291472696).

Almost surely, 2^400155515125 is an apocalyptic number.

It is an amenable number.

400155515125 is a deficient number, since it is larger than the sum of its proper divisors (130498737419).

400155515125 is a wasteful number, since it uses less digits than its factorization.

400155515125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7055 (or 7045 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 34.

The spelling of 400155515125 in words is "four hundred billion, one hundred fifty-five million, five hundred fifteen thousand, one hundred twenty-five".