25509152 has 12 divisors (see below), whose sum is σ = 50221206. Its totient is φ = 12754560.

The previous prime is 25509151. The next prime is 25509167. The reversal of 25509152 is 25190552.

It can be written as a sum of positive squares in only one way, i.e., 24245776 + 1263376 = 4924^2 + 1124^2 .

It is not an unprimeable number, because it can be changed into a prime (25509151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398549 + ... + 398612.

Almost surely, 2^25509152 is an apocalyptic number.

It is an amenable number.

25509152 is a deficient number, since it is larger than the sum of its proper divisors (24712054).

25509152 is an equidigital number, since it uses as much as digits as its factorization.

25509152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797171 (or 797163 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 25509152 is about 5050.6585709192. The cubic root of 25509152 is about 294.3734744926.

The spelling of 25509152 in words is "twenty-five million, five hundred nine thousand, one hundred fifty-two".