25219768 has 32 divisors (see below), whose sum is σ = 54812160. Its totient is φ = 10654560.

The previous prime is 25219759. The next prime is 25219781. The reversal of 25219768 is 86791252.

It is a self number, because there is not a number n which added to its sum of digits gives 25219768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805 + ... + 7147.

It is an arithmetic number, because the mean of its divisors is an integer number (1712880).

Almost surely, 2^25219768 is an apocalyptic number.

25219768 is a gapful number since it is divisible by the number (28) 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 25219768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27406080).

25219768 is an abundant number, since it is smaller than the sum of its proper divisors (29592392).

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

25219768 is a wasteful number, since it uses less digits than its factorization.

25219768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427 (or 6423 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 25219768 is about 5021.9287131539. The cubic root of 25219768 is about 293.2560827337.

The spelling of 25219768 in words is "twenty-five million, two hundred nineteen thousand, seven hundred sixty-eight".