25150138 has 16 divisors (see below), whose sum is σ = 41619816. Its totient is φ = 11324160.

The previous prime is 25150133. The next prime is 25150193. The reversal of 25150138 is 83105152.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4782969 + 20367169 = 2187^2 + 4513^2 .

It is not an unprimeable number, because it can be changed into a prime (25150133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10731 + ... + 12862.

Almost surely, 2^25150138 is an apocalyptic number.

25150138 is a deficient number, since it is larger than the sum of its proper divisors (16469678).

25150138 is a wasteful number, since it uses less digits than its factorization.

25150138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23649.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 25150138 is about 5014.9913260144. The cubic root of 25150138 is about 292.9859475219.

The spelling of 25150138 in words is "twenty-five million, one hundred fifty thousand, one hundred thirty-eight".