2555440025 has 24 divisors (see below), whose sum is σ = 3205032960. Its totient is φ = 2021060160.

The previous prime is 2555440021. The next prime is 2555440031. The reversal of 2555440025 is 5200445552.

It is not a de Polignac number, because 2555440025 - 2² = 2555440021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2555439973 and 2555440000.

It is not an unprimeable number, because it can be changed into a prime (2555440021) 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, 1005206 + ... + 1007744.

It is an arithmetic number, because the mean of its divisors is an integer number (133543040).

Almost surely, 2^2555440025 is an apocalyptic number.

2555440025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2555440025 is a deficient number, since it is larger than the sum of its proper divisors (649592935).

2555440025 is a wasteful number, since it uses less digits than its factorization.

2555440025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 32.

The square root of 2555440025 is about 50551.3602685427. The cubic root of 2555440025 is about 1367.1680404806.

Adding to 2555440025 its reverse (5200445552), we get a palindrome (7755885577).

The spelling of 2555440025 in words is "two billion, five hundred fifty-five million, four hundred forty thousand, twenty-five".