400624325 has 18 divisors (see below), whose sum is σ = 509239542. Its totient is φ = 312649600.

The previous prime is 400624321. The next prime is 400624349. The reversal of 400624325 is 523426004.

It can be written as a sum of positive squares in 9 ways, for example, as 367642276 + 32982049 = 19174^2 + 5743^2 .

It is not a de Polignac number, because 400624325 - 2² = 400624321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400624294 and 400624303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400624321) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 37259 + ... + 46791.

Almost surely, 2^400624325 is an apocalyptic number.

It is an amenable number.

400624325 is a deficient number, since it is larger than the sum of its proper divisors (108615217).

400624325 is an equidigital number, since it uses as much as digits as its factorization.

400624325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9625 (or 9579 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 400624325 is about 20015.6020394092. The cubic root of 400624325 is about 737.1894392884.

The spelling of 400624325 in words is "four hundred million, six hundred twenty-four thousand, three hundred twenty-five".