25103138 has 4 divisors (see below), whose sum is σ = 37654710. Its totient is φ = 12551568.

The previous prime is 25103129. The next prime is 25103159. The reversal of 25103138 is 83130152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21557449 + 3545689 = 4643^2 + 1883^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275783 + ... + 6275786.

Almost surely, 2^25103138 is an apocalyptic number.

25103138 is a deficient number, since it is larger than the sum of its proper divisors (12551572).

25103138 is a wasteful number, since it uses less digits than its factorization.

25103138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12551571.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 25103138 is about 5010.3031844390. The cubic root of 25103138 is about 292.8033252457.

The spelling of 25103138 in words is "twenty-five million, one hundred three thousand, one hundred thirty-eight".