400065425 has 24 divisors (see below), whose sum is σ = 527049600. Its totient is φ = 300386880.

The previous prime is 400065409. The next prime is 400065439. The reversal of 400065425 is 524560004.

It is not a de Polignac number, because 400065425 - 2⁴ = 400065409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400065394 and 400065403.

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, 47912 + ... + 55638.

It is an arithmetic number, because the mean of its divisors is an integer number (21960400).

Almost surely, 2^400065425 is an apocalyptic number.

It is an amenable number.

400065425 is a deficient number, since it is larger than the sum of its proper divisors (126984175).

400065425 is a wasteful number, since it uses less digits than its factorization.

400065425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7865 (or 7860 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 400065425 is about 20001.6355581237. The cubic root of 400065425 is about 736.8464688316.

The spelling of 400065425 in words is "four hundred million, sixty-five thousand, four hundred twenty-five".