25380138 has 48 divisors (see below), whose sum is σ = 59508000. Its totient is φ = 7195104.

The previous prime is 25380097. The next prime is 25380161. The reversal of 25380138 is 83108352.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50613 + ... + 51111.

It is an arithmetic number, because the mean of its divisors is an integer number (1239750).

Almost surely, 2^25380138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25380138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29754000).

25380138 is an abundant number, since it is smaller than the sum of its proper divisors (34127862).

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

25380138 is a wasteful number, since it uses less digits than its factorization.

25380138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 25380138 is about 5037.8703834061. The cubic root of 25380138 is about 293.8763652492.

The spelling of 25380138 in words is "twenty-five million, three hundred eighty thousand, one hundred thirty-eight".