25123123200 has 468 divisors, whose sum is σ = 96682959960. Its totient is φ = 5738987520.

The previous prime is 25123123147. The next prime is 25123123213. The reversal of 25123123200 is 232132152.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15051966 + ... + 15053634.

Almost surely, 2^25123123200 is an apocalyptic number.

25123123200 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 25123123200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48341479980).

25123123200 is an abundant number, since it is smaller than the sum of its proper divisors (71559836760).

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

25123123200 is a wasteful number, since it uses less digits than its factorization.

25123123200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 25123123200 its reverse (232132152), we get a palindrome (25355255352).

The spelling of 25123123200 in words is "twenty-five billion, one hundred twenty-three million, one hundred twenty-three thousand, two hundred".