25012389 has 16 divisors (see below), whose sum is σ = 35456832. Its totient is φ = 15629568.

The previous prime is 25012387. The next prime is 25012391. The reversal of 25012389 is 98321052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25012387) and next prime (25012391).

It is not a de Polignac number, because 25012389 - 2¹ = 25012387 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25012387) 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, 13567 + ... + 15299.

It is an arithmetic number, because the mean of its divisors is an integer number (2216052).

Almost surely, 2^25012389 is an apocalyptic number.

It is an amenable number.

25012389 is a deficient number, since it is larger than the sum of its proper divisors (10444443).

25012389 is a wasteful number, since it uses less digits than its factorization.

25012389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 25012389 is about 5001.2387465507. The cubic root of 25012389 is about 292.4500667192.

The spelling of 25012389 in words is "twenty-five million, twelve thousand, three hundred eighty-nine".