400125575 has 6 divisors (see below), whose sum is σ = 496155744. Its totient is φ = 320100440.

The previous prime is 400125571. The next prime is 400125589. The reversal of 400125575 is 575521004.

It is not a de Polignac number, because 400125575 - 2² = 400125571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400125571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8002487 + ... + 8002536.

It is an arithmetic number, because the mean of its divisors is an integer number (82692624).

Almost surely, 2^400125575 is an apocalyptic number.

400125575 is a deficient number, since it is larger than the sum of its proper divisors (96030169).

400125575 is a wasteful number, since it uses less digits than its factorization.

400125575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16005033 (or 16005028 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 400125575 is about 20003.1391286468. The cubic root of 400125575 is about 736.8833953701.

Adding to 400125575 its reverse (575521004), we get a palindrome (975646579).

The spelling of 400125575 in words is "four hundred million, one hundred twenty-five thousand, five hundred seventy-five".