25422453600 has 144 divisors (see below), whose sum is σ = 83402661888. Its totient is φ = 6725859840.

The previous prime is 25422453569. The next prime is 25422453607. The reversal of 25422453600 is 635422452.

It is a happy number.

It is a super-2 number, since 2×25422453600² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25422453607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263097 + ... + 346503.

It is an arithmetic number, because the mean of its divisors is an integer number (579185152).

Almost surely, 2^25422453600 is an apocalyptic number.

25422453600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25422453600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41701330944).

25422453600 is an abundant number, since it is smaller than the sum of its proper divisors (57980208288).

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

25422453600 is a wasteful number, since it uses less digits than its factorization.

25422453600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83557 (or 83544 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

The spelling of 25422453600 in words is "twenty-five billion, four hundred twenty-two million, four hundred fifty-three thousand, six hundred".