25153530 has 32 divisors (see below), whose sum is σ = 63547200. Its totient is φ = 6354432.

The previous prime is 25153519. The next prime is 25153547. The reversal of 25153530 is 3535152.

It is a self number, because there is not a number n which added to its sum of digits gives 25153530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21495 + ... + 22634.

It is an arithmetic number, because the mean of its divisors is an integer number (1985850).

Almost surely, 2^25153530 is an apocalyptic number.

25153530 is an abundant number, since it is smaller than the sum of its proper divisors (38393670).

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

25153530 is a wasteful number, since it uses less digits than its factorization.

25153530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44158.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 25153530 is about 5015.3295006410. The cubic root of 25153530 is about 292.9991186048. Note that the first 3 decimals are identical.

Adding to 25153530 its reverse (3535152), we get a palindrome (28688682).

The spelling of 25153530 in words is "twenty-five million, one hundred fifty-three thousand, five hundred thirty".