400050525 has 24 divisors (see below), whose sum is σ = 755905984. Its totient is φ = 182880000.

The previous prime is 400050517. The next prime is 400050557. The reversal of 400050525 is 525050004.

It is not a de Polignac number, because 400050525 - 2³ = 400050517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

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, 380476 + ... + 381525.

Almost surely, 2^400050525 is an apocalyptic number.

It is an amenable number.

400050525 is a deficient number, since it is larger than the sum of its proper divisors (355855459).

400050525 is a wasteful number, since it uses less digits than its factorization.

400050525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762021 (or 762016 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 400050525 is about 20001.2630851154. The cubic root of 400050525 is about 736.8373210372.

The spelling of 400050525 in words is "four hundred million, fifty thousand, five hundred twenty-five".