25354977516140 has 24 divisors (see below), whose sum is σ = 53245617555312. Its totient is φ = 10141959621440.

The previous prime is 25354977516073. The next prime is 25354977516149. The reversal of 25354977516140 is 4161577945352.

It is a self number, because there is not a number n which added to its sum of digits gives 25354977516140.

It is not an unprimeable number, because it can be changed into a prime (25354977516149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5322722 + ... + 8890518.

It is an arithmetic number, because the mean of its divisors is an integer number (2218567398138).

Almost surely, 2^{25354977516140} is an apocalyptic number.

25354977516140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25354977516140 is an abundant number, since it is smaller than the sum of its proper divisors (27890640039172).

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

25354977516140 is a wasteful number, since it uses less digits than its factorization.

25354977516140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923137 (or 3923135 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 59.

The spelling of 25354977516140 in words is "twenty-five trillion, three hundred fifty-four billion, nine hundred seventy-seven million, five hundred sixteen thousand, one hundred forty".