25373351780 has 96 divisors (see below), whose sum is σ = 61340944896. Its totient is φ = 8636092416.

The previous prime is 25373351779. The next prime is 25373351813. The reversal of 25373351780 is 8715337352.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18560657 + ... + 18562023.

It is an arithmetic number, because the mean of its divisors is an integer number (638968176).

Almost surely, 2^25373351780 is an apocalyptic number.

25373351780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25373351780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30670472448).

25373351780 is an abundant number, since it is smaller than the sum of its proper divisors (35967593116).

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

25373351780 is a wasteful number, since it uses less digits than its factorization.

25373351780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253 (or 2251 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 25373351780 in words is "twenty-five billion, three hundred seventy-three million, three hundred fifty-one thousand, seven hundred eighty".