400727525 has 24 divisors (see below), whose sum is σ = 543340224. Its totient is φ = 290758400.

The previous prime is 400727521. The next prime is 400727527. The reversal of 400727525 is 525727004.

It is not a de Polignac number, because 400727525 - 2² = 400727521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400727491 and 400727500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400727521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136877 + ... + 139773.

It is an arithmetic number, because the mean of its divisors is an integer number (22639176).

Almost surely, 2^400727525 is an apocalyptic number.

It is an amenable number.

400727525 is a deficient number, since it is larger than the sum of its proper divisors (142612699).

400727525 is a wasteful number, since it uses less digits than its factorization.

400727525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421 (or 3416 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 400727525 is about 20018.1798623152. The cubic root of 400727525 is about 737.2527333470.

The spelling of 400727525 in words is "four hundred million, seven hundred twenty-seven thousand, five hundred twenty-five".