25361000 has 64 divisors (see below), whose sum is σ = 67841280. Its totient is φ = 8692800.

The previous prime is 25360997. The next prime is 25361009. The reversal of 25361000 is 16352.

It is a self number, because there is not a number n which added to its sum of digits gives 25361000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25361009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5189 + ... + 8811.

It is an arithmetic number, because the mean of its divisors is an integer number (1060020).

Almost surely, 2^25361000 is an apocalyptic number.

25361000 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 25361000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33920640).

25361000 is an abundant number, since it is smaller than the sum of its proper divisors (42480280).

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

25361000 is a wasteful number, since it uses less digits than its factorization.

25361000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651 (or 3637 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 25361000 is about 5035.9706115108. The cubic root of 25361000 is about 293.8024804378.

Adding to 25361000 its reverse (16352), we get a palindrome (25377352).

The spelling of 25361000 in words is "twenty-five million, three hundred sixty-one thousand".