10025861 has 4 divisors (see below), whose sum is σ = 10461792. Its totient is φ = 9589932.

The previous prime is 10025843. The next prime is 10025879. The reversal of 10025861 is 16852001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16852001 = 43 ⋅391907.

It is an interprime number because it is at equal distance from previous prime (10025843) and next prime (10025879).

It is a cyclic number.

It is not a de Polignac number, because 10025861 - 2¹⁴ = 10009477 is a prime.

It is a super-3 number, since 3×10025861³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 435907 = 10025861 / (1 + 0 + 0 + 2 + 5 + 8 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10025831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217931 + ... + 217976.

It is an arithmetic number, because the mean of its divisors is an integer number (2615448).

Almost surely, 2^10025861 is an apocalyptic number.

It is an amenable number.

10025861 is a deficient number, since it is larger than the sum of its proper divisors (435931).

10025861 is an equidigital number, since it uses as much as digits as its factorization.

10025861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435930.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 10025861 is about 3166.3640030799. The cubic root of 10025861 is about 215.6290285882.

Adding to 10025861 its reverse (16852001), we get a palindrome (26877862).

The spelling of 10025861 in words is "ten million, twenty-five thousand, eight hundred sixty-one".