25138630 has 32 divisors (see below), whose sum is σ = 49686048. Its totient is φ = 9081600.

The previous prime is 25138627. The next prime is 25138637. The reversal of 25138630 is 3683152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25138637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18370 + ... + 19690.

It is an arithmetic number, because the mean of its divisors is an integer number (1552689).

Almost surely, 2^25138630 is an apocalyptic number.

25138630 is a deficient number, since it is larger than the sum of its proper divisors (24547418).

25138630 is a wasteful number, since it uses less digits than its factorization.

25138630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25138630 is about 5013.8438348237. The cubic root of 25138630 is about 292.9412533115.

The spelling of 25138630 in words is "twenty-five million, one hundred thirty-eight thousand, six hundred thirty".