25069021 has 4 divisors (see below), whose sum is σ = 25933500. Its totient is φ = 24204544.

The previous prime is 25069013. The next prime is 25069063. The reversal of 25069021 is 12096052.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11088900 + 13980121 = 3330^2 + 3739^2 .

It is a cyclic number.

It is not a de Polignac number, because 25069021 - 2³ = 25069013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25069621) 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, 432196 + ... + 432253.

It is an arithmetic number, because the mean of its divisors is an integer number (6483375).

Almost surely, 2^25069021 is an apocalyptic number.

It is an amenable number.

25069021 is a deficient number, since it is larger than the sum of its proper divisors (864479).

25069021 is an equidigital number, since it uses as much as digits as its factorization.

25069021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864478.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 25069021 is about 5006.8973426664. The cubic root of 25069021 is about 292.6706180653.

The spelling of 25069021 in words is "twenty-five million, sixty-nine thousand, twenty-one".