25030021 has 8 divisors (see below), whose sum is σ = 25515200. Its totient is φ = 24548832.

The previous prime is 25030013. The next prime is 25030043. The reversal of 25030021 is 12003052.

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 25030021 - 2³ = 25030013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25029983 and 25030010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25030121) 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, 13666 + ... + 15388.

It is an arithmetic number, because the mean of its divisors is an integer number (3189400).

Almost surely, 2^25030021 is an apocalyptic number.

It is an amenable number.

25030021 is a deficient number, since it is larger than the sum of its proper divisors (485179).

25030021 is a wasteful number, since it uses less digits than its factorization.

25030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 25030021 is about 5003.0011992803. The cubic root of 25030021 is about 292.5187695847.

Adding to 25030021 its reverse (12003052), we get a palindrome (37033073).

The spelling of 25030021 in words is "twenty-five million, thirty thousand, twenty-one".