25225531425 has 144 divisors (see below), whose sum is σ = 47134983168. Its totient is φ = 12889497600.

The previous prime is 25225531421. The next prime is 25225531427. The reversal of 25225531425 is 52413552252.

25225531425 is a `hidden beast` number, since 2 + 5 + 225 + 5 + 3 + 1 + 425 = 666.

It is not a de Polignac number, because 25225531425 - 2² = 25225531421 is a prime.

It is a super-3 number, since 3×25225531425³ (a number of 32 digits) contains 333 as substring.

Its product of digits (120000) is a multiple of the sum of its prime factors (480).

It is a self number, because there is not a number n which added to its sum of digits gives 25225531425.

It is not an unprimeable number, because it can be changed into a prime (25225531421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 113118864 + ... + 113119086.

It is an arithmetic number, because the mean of its divisors is an integer number (327326272).

Almost surely, 2^25225531425 is an apocalyptic number.

25225531425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25225531425 is a deficient number, since it is larger than the sum of its proper divisors (21909451743).

25225531425 is a wasteful number, since it uses less digits than its factorization.

25225531425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 472 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The spelling of 25225531425 in words is "twenty-five billion, two hundred twenty-five million, five hundred thirty-one thousand, four hundred twenty-five".