400886725 has 24 divisors (see below), whose sum is σ = 510982920. Its totient is φ = 311808000.

The previous prime is 400886701. The next prime is 400886743. The reversal of 400886725 is 527688004.

It can be written as a sum of positive squares in 12 ways, for example, as 398760961 + 2125764 = 19969^2 + 1458^2 .

It is not a de Polignac number, because 400886725 - 2¹⁹ = 400362437 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, 431061 + ... + 431989.

It is an arithmetic number, because the mean of its divisors is an integer number (21290955).

Almost surely, 2^400886725 is an apocalyptic number.

It is an amenable number.

400886725 is a deficient number, since it is larger than the sum of its proper divisors (110096195).

400886725 is a wasteful number, since it uses less digits than its factorization.

400886725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1396 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 400886725 is about 20022.1558529545. The cubic root of 400886725 is about 737.3503517106.

The spelling of 400886725 in words is "four hundred million, eight hundred eighty-six thousand, seven hundred twenty-five".