25222406592 has 224 divisors, whose sum is σ = 72438914304. Its totient is φ = 7715635200.

The previous prime is 25222406591. The next prime is 25222406597. The reversal of 25222406592 is 29560422252.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25222406592.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25222406591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36500967 + ... + 36501657.

Almost surely, 2^25222406592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25222406592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36219457152).

25222406592 is an abundant number, since it is smaller than the sum of its proper divisors (47216507712).

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

25222406592 is a wasteful number, since it uses less digits than its factorization.

25222406592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 25222406592 in words is "twenty-five billion, two hundred twenty-two million, four hundred six thousand, five hundred ninety-two".