25778275000 has 96 divisors (see below), whose sum is σ = 60535188000. Its totient is φ = 10290640000.

The previous prime is 25778274979. The next prime is 25778275009. The reversal of 25778275000 is 57287752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25778275009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20974386 + ... + 20975614.

It is an arithmetic number, because the mean of its divisors is an integer number (630574875).

Almost surely, 2^25778275000 is an apocalyptic number.

25778275000 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 25778275000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30267594000).

25778275000 is an abundant number, since it is smaller than the sum of its proper divisors (34756913000).

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

25778275000 is an equidigital number, since it uses as much as digits as its factorization.

25778275000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099 (or 2075 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 43.

The spelling of 25778275000 in words is "twenty-five billion, seven hundred seventy-eight million, two hundred seventy-five thousand".