25200406654540 has 48 divisors (see below), whose sum is σ = 56992055067360. Its totient is φ = 9304705751040.

The previous prime is 25200406654499. The next prime is 25200406654547. The reversal of 25200406654540 is 4545660400252.

It is a happy number.

It is a super-2 number, since 2×25200406654540² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25200406654547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79456075 + ... + 79772605.

It is an arithmetic number, because the mean of its divisors is an integer number (1187334480570).

Almost surely, 2^{25200406654540} is an apocalyptic number.

25200406654540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25200406654540 is an abundant number, since it is smaller than the sum of its proper divisors (31791648412820).

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

25200406654540 is a wasteful number, since it uses less digits than its factorization.

25200406654540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622762 (or 622760 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 25200406654540 in words is "twenty-five trillion, two hundred billion, four hundred six million, six hundred fifty-four thousand, five hundred forty".