25643152 has 10 divisors (see below), whose sum is σ = 49683638. Its totient is φ = 12821568.

The previous prime is 25643131. The next prime is 25643161. The reversal of 25643152 is 25134652.

It can be written as a sum of positive squares in only one way, i.e., 22316176 + 3326976 = 4724^2 + 1824^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25643152.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801333 + ... + 801364.

Almost surely, 2^25643152 is an apocalyptic number.

It is an amenable number.

25643152 is a deficient number, since it is larger than the sum of its proper divisors (24040486).

25643152 is a wasteful number, since it uses less digits than its factorization.

25643152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602705 (or 1602699 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 25643152 is about 5063.9067921912. The cubic root of 25643152 is about 294.8880241492. Note that the first 3 decimals are identical.

The spelling of 25643152 in words is "twenty-five million, six hundred forty-three thousand, one hundred fifty-two".