240400404225 has 72 divisors (see below), whose sum is σ = 456916331872. Its totient is φ = 125231702400.

The previous prime is 240400404217. The next prime is 240400404239. The reversal of 240400404225 is 522404004042.

It is not a de Polignac number, because 240400404225 - 2³ = 240400404217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 198916 + ... + 721365.

Almost surely, 2^240400404225 is an apocalyptic number.

240400404225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

240400404225 is a deficient number, since it is larger than the sum of its proper divisors (216515927647).

240400404225 is an equidigital number, since it uses as much as digits as its factorization.

240400404225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920349 (or 920332 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

Adding to 240400404225 its reverse (522404004042), we get a palindrome (762804408267).

The spelling of 240400404225 in words is "two hundred forty billion, four hundred million, four hundred four thousand, two hundred twenty-five".