25138996 has 6 divisors (see below), whose sum is σ = 43993250. Its totient is φ = 12569496.

The previous prime is 25138987. The next prime is 25138999. The reversal of 25138996 is 69983152.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16810000 + 8328996 = 4100^2 + 2886^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25138999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3142371 + ... + 3142378.

Almost surely, 2^25138996 is an apocalyptic number.

It is an amenable number.

25138996 is a deficient number, since it is larger than the sum of its proper divisors (18854254).

25138996 is a wasteful number, since it uses less digits than its factorization.

25138996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6284753 (or 6284751 counting only the distinct ones).

The product of its digits is 116640, while the sum is 43.

The square root of 25138996 is about 5013.8803336338. The cubic root of 25138996 is about 292.9426749745.

The spelling of 25138996 in words is "twenty-five million, one hundred thirty-eight thousand, nine hundred ninety-six".