25120010025 has 36 divisors (see below), whose sum is σ = 49082982000. Its totient is φ = 12179397600.

The previous prime is 25120010021. The next prime is 25120010051. The reversal of 25120010025 is 52001002152.

It is not a de Polignac number, because 25120010025 - 2² = 25120010021 is a prime.

It is a super-2 number, since 2×25120010025² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25120010021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5072275 + ... + 5077224.

Almost surely, 2^25120010025 is an apocalyptic number.

25120010025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25120010025 is a deficient number, since it is larger than the sum of its proper divisors (23962971975).

25120010025 is a wasteful number, since it uses less digits than its factorization.

25120010025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10149526 (or 10149518 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

Adding to 25120010025 its reverse (52001002152), we get a palindrome (77121012177).

The spelling of 25120010025 in words is "twenty-five billion, one hundred twenty million, ten thousand, twenty-five".