25200123504 has 40 divisors (see below), whose sum is σ = 67345161360. Its totient is φ = 8110384128.

The previous prime is 25200123499. The next prime is 25200123539. The reversal of 25200123504 is 40532100252.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9050377 + ... + 9053160.

It is an arithmetic number, because the mean of its divisors is an integer number (1683629034).

Almost surely, 2^25200123504 is an apocalyptic number.

25200123504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25200123504 is an abundant number, since it is smaller than the sum of its proper divisors (42145037856).

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

25200123504 is a wasteful number, since it uses less digits than its factorization.

25200123504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18103577 (or 18103571 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 25200123504 its reverse (40532100252), we get a palindrome (65732223756).

The spelling of 25200123504 in words is "twenty-five billion, two hundred million, one hundred twenty-three thousand, five hundred four".