25030305028 has 18 divisors (see below), whose sum is σ = 46531252586. Its totient is φ = 11778966528.

The previous prime is 25030305023. The next prime is 25030305037. The reversal of 25030305028 is 82050303052.

It can be written as a sum of positive squares in 3 ways, for example, as 10859307264 + 14170997764 = 104208^2 + 119042^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25030304987 and 25030305005.

It is not an unprimeable number, because it can be changed into a prime (25030305023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10825101 + ... + 10827412.

Almost surely, 2^25030305028 is an apocalyptic number.

It is an amenable number.

25030305028 is a deficient number, since it is larger than the sum of its proper divisors (21500947558).

25030305028 is a wasteful number, since it uses less digits than its factorization.

25030305028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21652551 (or 21652532 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 25030305028 in words is "twenty-five billion, thirty million, three hundred five thousand, twenty-eight".