25045128 has 24 divisors (see below), whose sum is σ = 67830750. Its totient is φ = 8348352.

The previous prime is 25045127. The next prime is 25045129. The reversal of 25045128 is 82154052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25045127) and next prime (25045129).

It can be written as a sum of positive squares in only one way, i.e., 16990884 + 8054244 = 4122^2 + 2838^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (25045127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173853 + ... + 173996.

Almost surely, 2^25045128 is an apocalyptic number.

It is an amenable number.

25045128 is an abundant number, since it is smaller than the sum of its proper divisors (42785622).

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

25045128 is a wasteful number, since it uses less digits than its factorization.

25045128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347861 (or 347854 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 25045128 is about 5004.5107652996. The cubic root of 25045128 is about 292.5776081596.

The spelling of 25045128 in words is "twenty-five million, forty-five thousand, one hundred twenty-eight".