25561035 has 32 divisors (see below), whose sum is σ = 47016000. Its totient is φ = 13160448.

The previous prime is 25561033. The next prime is 25561051. The reversal of 25561035 is 53016552.

25561035 is a `hidden beast` number, since 2 + 556 + 103 + 5 = 666.

It is not a de Polignac number, because 25561035 - 2¹ = 25561033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25561031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651 + ... + 7179.

It is an arithmetic number, because the mean of its divisors is an integer number (1469250).

Almost surely, 2^25561035 is an apocalyptic number.

25561035 is a deficient number, since it is larger than the sum of its proper divisors (21454965).

25561035 is a wasteful number, since it uses less digits than its factorization.

25561035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572 (or 6566 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 25561035 is about 5055.7922227876. The cubic root of 25561035 is about 294.5729144962.

Adding to 25561035 its reverse (53016552), we get a palindrome (78577587).

The spelling of 25561035 in words is "twenty-five million, five hundred sixty-one thousand, thirty-five".