25002223542 has 24 divisors (see below), whose sum is σ = 54535057200. Its totient is φ = 8278140240.

The previous prime is 25002223523. The next prime is 25002223613. The reversal of 25002223542 is 24532220052.

It is a super-2 number, since 2×25002223542² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 4658434 + ... + 4663797.

It is an arithmetic number, because the mean of its divisors is an integer number (2272294050).

Almost surely, 2^25002223542 is an apocalyptic number.

25002223542 is an abundant number, since it is smaller than the sum of its proper divisors (29532833658).

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

25002223542 is a wasteful number, since it uses less digits than its factorization.

25002223542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9322388 (or 9322385 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 25002223542 its reverse (24532220052), we get a palindrome (49534443594).

The spelling of 25002223542 in words is "twenty-five billion, two million, two hundred twenty-three thousand, five hundred forty-two".