400725212 has 12 divisors (see below), whose sum is σ = 701424360. Its totient is φ = 200318256.

The previous prime is 400725211. The next prime is 400725217. The reversal of 400725212 is 212527004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400725211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17339 + ... + 33197.

It is an arithmetic number, because the mean of its divisors is an integer number (58452030).

Almost surely, 2^400725212 is an apocalyptic number.

It is an amenable number.

400725212 is a deficient number, since it is larger than the sum of its proper divisors (300699148).

400725212 is a wasteful number, since it uses less digits than its factorization.

400725212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22180 (or 22178 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 400725212 is about 20018.1220897466. The cubic root of 400725212 is about 737.2513148696.

The spelling of 400725212 in words is "four hundred million, seven hundred twenty-five thousand, two hundred twelve".