25221322134 has 32 divisors (see below), whose sum is σ = 56055767040. Its totient is φ = 8405849736.

The previous prime is 25221322123. The next prime is 25221322141. The reversal of 25221322134 is 43122312252.

25221322134 is a `hidden beast` number, since 2 + 522 + 1 + 3 + 2 + 2 + 134 = 666.

25221322134 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×25221322134² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25221322098 and 25221322107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373107 + ... + 435489.

It is an arithmetic number, because the mean of its divisors is an integer number (1751742720).

Almost surely, 2^25221322134 is an apocalyptic number.

25221322134 is an abundant number, since it is smaller than the sum of its proper divisors (30834444906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25221322134 is a wasteful number, since it uses less digits than its factorization.

25221322134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69881 (or 69875 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 25221322134 its reverse (43122312252), we get a palindrome (68343634386).

The spelling of 25221322134 in words is "twenty-five billion, two hundred twenty-one million, three hundred twenty-two thousand, one hundred thirty-four".