2405625 has 20 divisors (see below), whose sum is σ = 4011216. Its totient is φ = 1282000.

The previous prime is 2405621. The next prime is 2405633. The reversal of 2405625 is 5265042.

It is not a de Polignac number, because 2405625 - 2² = 2405621 is a prime.

2405625 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2405595 and 2405604.

It is not an unprimeable number, because it can be changed into a prime (2405621) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1234 + ... + 2516.

2^2405625 is an apocalyptic number.

2405625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2405625 is a deficient number, since it is larger than the sum of its proper divisors (1605591).

2405625 is an equidigital number, since it uses as much as digits as its factorization.

2405625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2405625 is about 1551.0077369246. The cubic root of 2405625 is about 133.9911073032.

Subtracting from 2405625 its sum of digits (24), we obtain a square (2405601 = 1551²).

The spelling of 2405625 in words is "two million, four hundred five thousand, six hundred twenty-five".