25312505229 has 12 divisors (see below), whose sum is σ = 39886372032. Its totient is φ = 15340912200.

The previous prime is 25312505213. The next prime is 25312505287. The reversal of 25312505229 is 92250521352.

25312505229 is a `hidden beast` number, since 2 + 5 + 3 + 125 + 0 + 522 + 9 = 666.

It is not a de Polignac number, because 25312505229 - 2⁴ = 25312505213 is a prime.

It is a super-3 number, since 3×25312505229³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25312505193 and 25312505202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25312505429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127840837 + ... + 127841034.

It is an arithmetic number, because the mean of its divisors is an integer number (3323864336).

Almost surely, 2^25312505229 is an apocalyptic number.

It is an amenable number.

25312505229 is a deficient number, since it is larger than the sum of its proper divisors (14573866803).

25312505229 is a wasteful number, since it uses less digits than its factorization.

25312505229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255681888 (or 255681885 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 25312505229 in words is "twenty-five billion, three hundred twelve million, five hundred five thousand, two hundred twenty-nine".