25024405625 has 10 divisors (see below), whose sum is σ = 31270498050. Its totient is φ = 20019524000.

The previous prime is 25024405613. The next prime is 25024405657. The reversal of 25024405625 is 52650442052.

It can be written as a sum of positive squares in 5 ways, for example, as 6133552489 + 18890853136 = 78317^2 + 137444^2 .

It is not a de Polignac number, because 25024405625 - 2¹⁴ = 25024389241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20018900 + ... + 20020149.

It is an arithmetic number, because the mean of its divisors is an integer number (3127049805).

Almost surely, 2^25024405625 is an apocalyptic number.

25024405625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25024405625 is a deficient number, since it is larger than the sum of its proper divisors (6246092425).

25024405625 is an frugal number, since it uses more digits than its factorization.

25024405625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40039069 (or 40039054 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 25024405625 its reverse (52650442052), we get a palindrome (77674847677).

The spelling of 25024405625 in words is "twenty-five billion, twenty-four million, four hundred five thousand, six hundred twenty-five".