25259730 has 64 divisors (see below), whose sum is σ = 63341568. Its totient is φ = 6439680.

The previous prime is 25259723. The next prime is 25259743. The reversal of 25259730 is 3795252.

It is a junction number, because it is equal to n+sod(n) for n = 25259691 and 25259700.

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, 145924 + ... + 146096.

It is an arithmetic number, because the mean of its divisors is an integer number (989712).

Almost surely, 2^25259730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25259730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31670784).

25259730 is an abundant number, since it is smaller than the sum of its proper divisors (38081838).

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

25259730 is a wasteful number, since it uses less digits than its factorization.

25259730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 25259730 is about 5025.9058884941. The cubic root of 25259730 is about 293.4108940334.

The spelling of 25259730 in words is "twenty-five million, two hundred fifty-nine thousand, seven hundred thirty".