25145530 has 16 divisors (see below), whose sum is σ = 45368064. Its totient is φ = 10034640.

The previous prime is 25145501. The next prime is 25145539. The reversal of 25145530 is 3554152.

It is a junction number, because it is equal to n+sod(n) for n = 25145495 and 25145504.

It is not an unprimeable number, because it can be changed into a prime (25145539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1915 + ... + 7345.

It is an arithmetic number, because the mean of its divisors is an integer number (2835504).

Almost surely, 2^25145530 is an apocalyptic number.

25145530 is a deficient number, since it is larger than the sum of its proper divisors (20222534).

25145530 is a wasteful number, since it uses less digits than its factorization.

25145530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5901.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 25145530 is about 5014.5318824393. The cubic root of 25145530 is about 292.9680528327.

Adding to 25145530 its reverse (3554152), we get a palindrome (28699682).

The spelling of 25145530 in words is "twenty-five million, one hundred forty-five thousand, five hundred thirty".