25000027525 has 24 divisors (see below), whose sum is σ = 34153090848. Its totient is φ = 18001800000.

The previous prime is 25000027487. The next prime is 25000027553. The reversal of 25000027525 is 52572000052.

It is not a de Polignac number, because 25000027525 - 2¹³ = 25000019333 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25000027493 and 25000027502.

It is a congruent 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, 422271 + ... + 477820.

It is an arithmetic number, because the mean of its divisors is an integer number (1423045452).

Almost surely, 2^25000027525 is an apocalyptic number.

25000027525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25000027525 is a deficient number, since it is larger than the sum of its proper divisors (9153063323).

25000027525 is a wasteful number, since it uses less digits than its factorization.

25000027525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900213 (or 900208 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

Adding to 25000027525 its reverse (52572000052), we get a palindrome (77572027577).

The spelling of 25000027525 in words is "twenty-five billion, twenty-seven thousand, five hundred twenty-five".