400450775525 has 24 divisors (see below), whose sum is σ = 497479320000. Its totient is φ = 319767324800.

The previous prime is 400450775503. The next prime is 400450775539. The reversal of 400450775525 is 525577054004.

It is not a de Polignac number, because 400450775525 - 2³⁴ = 383270906341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44494976 + ... + 44503974.

It is an arithmetic number, because the mean of its divisors is an integer number (20728305000).

Almost surely, 2^400450775525 is an apocalyptic number.

It is an amenable number.

400450775525 is a deficient number, since it is larger than the sum of its proper divisors (97028544475).

400450775525 is a wasteful number, since it uses less digits than its factorization.

400450775525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12109 (or 12104 counting only the distinct ones).

The product of its (nonzero) digits is 980000, while the sum is 44.

The spelling of 400450775525 in words is "four hundred billion, four hundred fifty million, seven hundred seventy-five thousand, five hundred twenty-five".