25138765 has 8 divisors (see below), whose sum is σ = 30198528. Its totient is φ = 20089680.

The previous prime is 25138759. The next prime is 25138783. The reversal of 25138765 is 56783152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25138765 - 2⁷ = 25138637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4060 + ... + 8170.

It is an arithmetic number, because the mean of its divisors is an integer number (3774816).

Almost surely, 2^25138765 is an apocalyptic number.

It is an amenable number.

25138765 is a deficient number, since it is larger than the sum of its proper divisors (5059763).

25138765 is a wasteful number, since it uses less digits than its factorization.

25138765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339.

The product of its digits is 50400, while the sum is 37.

The square root of 25138765 is about 5013.8572975305. The cubic root of 25138765 is about 292.9417776970.

The spelling of 25138765 in words is "twenty-five million, one hundred thirty-eight thousand, seven hundred sixty-five".