25020495530 has 8 divisors (see below), whose sum is σ = 45036891972. Its totient is φ = 10008198208.

The previous prime is 25020495523. The next prime is 25020495557. The reversal of 25020495530 is 3559402052.

It can be written as a sum of positive squares in 2 ways, for example, as 23488321081 + 1532174449 = 153259^2 + 39143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251024767 + ... + 1251024786.

Almost surely, 2^25020495530 is an apocalyptic number.

25020495530 is a deficient number, since it is larger than the sum of its proper divisors (20016396442).

25020495530 is a wasteful number, since it uses less digits than its factorization.

25020495530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502049560.

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 25020495530 its reverse (3559402052), we get a palindrome (28579897582).

The spelling of 25020495530 in words is "twenty-five billion, twenty million, four hundred ninety-five thousand, five hundred thirty".