25385069 has 4 divisors (see below), whose sum is σ = 25525500. Its totient is φ = 25244640.

The previous prime is 25385057. The next prime is 25385081. The reversal of 25385069 is 96058352.

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

It is an interprime number because it is at equal distance from previous prime (25385057) and next prime (25385081).

It can be written as a sum of positive squares in 2 ways, for example, as 3948169 + 21436900 = 1987^2 + 4630^2 .

It is a cyclic number.

It is not a de Polignac number, because 25385069 - 2⁸ = 25384813 is a prime.

It is a super-2 number, since 2×25385069² = 1288803456269522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25385099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69944 + ... + 70305.

It is an arithmetic number, because the mean of its divisors is an integer number (6381375).

Almost surely, 2^25385069 is an apocalyptic number.

It is an amenable number.

25385069 is a deficient number, since it is larger than the sum of its proper divisors (140431).

25385069 is a wasteful number, since it uses less digits than its factorization.

25385069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140430.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 25385069 is about 5038.3597529355. The cubic root of 25385069 is about 293.8953960167.

The spelling of 25385069 in words is "twenty-five million, three hundred eighty-five thousand, sixty-nine".