400125630 has 32 divisors (see below), whose sum is σ = 964867968. Its totient is φ = 106192800.

The previous prime is 400125589. The next prime is 400125637. The reversal of 400125630 is 36521004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400125597 and 400125606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400125637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25276 + ... + 37935.

It is an arithmetic number, because the mean of its divisors is an integer number (30152124).

Almost surely, 2^400125630 is an apocalyptic number.

400125630 is an abundant number, since it is smaller than the sum of its proper divisors (564742338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400125630 is a wasteful number, since it uses less digits than its factorization.

400125630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63432.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 400125630 is about 20003.1405034310. The cubic root of 400125630 is about 736.8834291334.

Adding to 400125630 its reverse (36521004), we get a palindrome (436646634).

The spelling of 400125630 in words is "four hundred million, one hundred twenty-five thousand, six hundred thirty".