25120423225 has 12 divisors (see below), whose sum is σ = 31152272620. Its totient is φ = 20094436800.

The previous prime is 25120423157. The next prime is 25120423243. The reversal of 25120423225 is 52232402152.

It can be written as a sum of positive squares in 6 ways, for example, as 437813776 + 24682609449 = 20924^2 + 157107^2 .

It is not a de Polignac number, because 25120423225 - 2³³ = 16530488633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25120423193 and 25120423202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261235 + ... + 344215.

Almost surely, 2^25120423225 is an apocalyptic number.

25120423225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25120423225 is a deficient number, since it is larger than the sum of its proper divisors (6031849395).

25120423225 is a wasteful number, since it uses less digits than its factorization.

25120423225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95100 (or 95095 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 25120423225 its reverse (52232402152), we get a palindrome (77352825377).

The spelling of 25120423225 in words is "twenty-five billion, one hundred twenty million, four hundred twenty-three thousand, two hundred twenty-five".