25530025025 has 24 divisors (see below), whose sum is σ = 32253955704. Its totient is φ = 20042624000.

The previous prime is 25530024953. The next prime is 25530025151. The reversal of 25530025025 is 52052003552.

It can be written as a sum of positive squares in 12 ways, for example, as 16857386896 + 8672638129 = 129836^2 + 93127^2 .

It is not a de Polignac number, because 25530025025 - 2¹⁴ = 25530008641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240587 + ... + 330063.

It is an arithmetic number, because the mean of its divisors is an integer number (1343914821).

Almost surely, 2^25530025025 is an apocalyptic number.

25530025025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25530025025 is a deficient number, since it is larger than the sum of its proper divisors (6723930679).

25530025025 is a wasteful number, since it uses less digits than its factorization.

25530025025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89701 (or 89696 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 29.

Adding to 25530025025 its reverse (52052003552), we get a palindrome (77582028577).

The spelling of 25530025025 in words is "twenty-five billion, five hundred thirty million, twenty-five thousand, twenty-five".