25330780025 has 6 divisors (see below), whose sum is σ = 31410167262. Its totient is φ = 20264624000.

The previous prime is 25330780019. The next prime is 25330780037. The reversal of 25330780025 is 52008703352.

It can be written as a sum of positive squares in 3 ways, for example, as 246238864 + 25084541161 = 15692^2 + 158381^2 .

It is not a de Polignac number, because 25330780025 - 2¹² = 25330775929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506615576 + ... + 506615625.

It is an arithmetic number, because the mean of its divisors is an integer number (5235027877).

Almost surely, 2^25330780025 is an apocalyptic number.

25330780025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25330780025 is a deficient number, since it is larger than the sum of its proper divisors (6079387237).

25330780025 is a wasteful number, since it uses less digits than its factorization.

25330780025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013231211 (or 1013231206 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 25330780025 in words is "twenty-five billion, three hundred thirty million, seven hundred eighty thousand, twenty-five".