25223554067952 has 120 divisors (see below), whose sum is σ = 68123104647808. Its totient is φ = 8041584355200.

The previous prime is 25223554067951. The next prime is 25223554068029. The reversal of 25223554067952 is 25976045532252.

It is a junction number, because it is equal to n+sod(n) for n = 25223554067892 and 25223554067901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25223554067951) 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, 340495077 + ... + 340569147.

Almost surely, 2^{25223554067952} 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 25223554067952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34061552323904).

25223554067952 is an abundant number, since it is smaller than the sum of its proper divisors (42899550579856).

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

25223554067952 is a wasteful number, since it uses less digits than its factorization.

25223554067952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87539 (or 87510 counting only the distinct ones).

The product of its (nonzero) digits is 45360000, while the sum is 57.

The spelling of 25223554067952 in words is "twenty-five trillion, two hundred twenty-three billion, five hundred fifty-four million, sixty-seven thousand, nine hundred fifty-two".