25554460261660 has 72 divisors (see below), whose sum is σ = 59953443859008. Its totient is φ = 9140194377600.

The previous prime is 25554460261639. The next prime is 25554460261777. The reversal of 25554460261660 is 6616206445552.

It is a junction number, because it is equal to n+sod(n) for n = 25554460261598 and 25554460261607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86407252 + ... + 86702491.

It is an arithmetic number, because the mean of its divisors is an integer number (832686720264).

Almost surely, 2^{25554460261660} is an apocalyptic number.

25554460261660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25554460261660 is an abundant number, since it is smaller than the sum of its proper divisors (34398983597348).

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

25554460261660 is a wasteful number, since it uses less digits than its factorization.

25554460261660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173109835 (or 173109822 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 52.

The spelling of 25554460261660 in words is "twenty-five trillion, five hundred fifty-four billion, four hundred sixty million, two hundred sixty-one thousand, six hundred sixty".