25128983 has 8 divisors (see below), whose sum is σ = 27451920. Its totient is φ = 22812480.

The previous prime is 25128977. The next prime is 25128989. The reversal of 25128983 is 38982152.

It is an interprime number because it is at equal distance from previous prime (25128977) and next prime (25128989).

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

It is a cyclic number.

It is not a de Polignac number, because 25128983 - 2⁶ = 25128919 is a prime.

It is a super-2 number, since 2×25128983² = 1262931573228578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25128989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10691 + ... + 12827.

It is an arithmetic number, because the mean of its divisors is an integer number (3431490).

Almost surely, 2^25128983 is an apocalyptic number.

25128983 is a deficient number, since it is larger than the sum of its proper divisors (2322937).

25128983 is a wasteful number, since it uses less digits than its factorization.

25128983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217.

The product of its digits is 34560, while the sum is 38.

The square root of 25128983 is about 5012.8817061646. The cubic root of 25128983 is about 292.9037762514.

The spelling of 25128983 in words is "twenty-five million, one hundred twenty-eight thousand, nine hundred eighty-three".