25288530 has 16 divisors (see below), whose sum is σ = 60692544. Its totient is φ = 6743600.

The previous prime is 25288519. The next prime is 25288541. The reversal of 25288530 is 3588252.

It is an interprime number because it is at equal distance from previous prime (25288519) and next prime (25288541).

It is a junction number, because it is equal to n+sod(n) for n = 25288491 and 25288500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421446 + ... + 421505.

It is an arithmetic number, because the mean of its divisors is an integer number (3793284).

Almost surely, 2^25288530 is an apocalyptic number.

25288530 is an abundant number, since it is smaller than the sum of its proper divisors (35404014).

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

25288530 is a wasteful number, since it uses less digits than its factorization.

25288530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842961.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 25288530 is about 5028.7702274015. The cubic root of 25288530 is about 293.5223629506.

The spelling of 25288530 in words is "twenty-five million, two hundred eighty-eight thousand, five hundred thirty".