25660154312052 has 144 divisors (see below), whose sum is σ = 66638447366400. Its totient is φ = 7639363549440.

The previous prime is 25660154311973. The next prime is 25660154312081. The reversal of 25660154312052 is 25021345106652.

It is a junction number, because it is equal to n+sod(n) for n = 25660154311995 and 25660154312013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1087328949 + ... + 1087352547.

It is an arithmetic number, because the mean of its divisors is an integer number (462766995600).

Almost surely, 2^{25660154312052} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25660154312052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33319223683200).

25660154312052 is an abundant number, since it is smaller than the sum of its proper divisors (40978293054348).

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

25660154312052 is a wasteful number, since it uses less digits than its factorization.

25660154312052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30934 (or 30901 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 25660154312052 in words is "twenty-five trillion, six hundred sixty billion, one hundred fifty-four million, three hundred twelve thousand, fifty-two".