25245138 has 24 divisors (see below), whose sum is σ = 52301808. Its totient is φ = 8123248.

The previous prime is 25245133. The next prime is 25245139. The reversal of 25245138 is 83154252.

It is not an unprimeable number, because it can be changed into a prime (25245133) 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 11 ways as a sum of consecutive naturals, for example, 2545 + ... + 7547.

It is an arithmetic number, because the mean of its divisors is an integer number (2179242).

Almost surely, 2^25245138 is an apocalyptic number.

25245138 is an abundant number, since it is smaller than the sum of its proper divisors (27056670).

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

25245138 is a wasteful number, since it uses less digits than its factorization.

25245138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066 (or 5037 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 25245138 is about 5024.4540001875. The cubic root of 25245138 is about 293.3543841068.

The spelling of 25245138 in words is "twenty-five million, two hundred forty-five thousand, one hundred thirty-eight".