25089021 has 36 divisors (see below), whose sum is σ = 39809952. Its totient is φ = 15760008.

The previous prime is 25089019. The next prime is 25089037. The reversal of 25089021 is 12098052.

It is not a de Polignac number, because 25089021 - 2¹ = 25089019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25089041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 374430 + ... + 374496.

It is an arithmetic number, because the mean of its divisors is an integer number (1105832).

Almost surely, 2^25089021 is an apocalyptic number.

It is an amenable number.

25089021 is a deficient number, since it is larger than the sum of its proper divisors (14720931).

25089021 is an frugal number, since it uses more digits than its factorization.

25089021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 25089021 is about 5008.8941893396. The cubic root of 25089021 is about 292.7484279970.

The spelling of 25089021 in words is "twenty-five million, eighty-nine thousand, twenty-one".