25273021 has 16 divisors (see below), whose sum is σ = 28016640. Its totient is φ = 22690800.

The previous prime is 25273019. The next prime is 25273037. The reversal of 25273021 is 12037252.

It is a cyclic number.

It is not a de Polignac number, because 25273021 - 2¹ = 25273019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25272983 and 25273001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25273081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65796 + ... + 66178.

It is an arithmetic number, because the mean of its divisors is an integer number (1751040).

Almost surely, 2^25273021 is an apocalyptic number.

It is an amenable number.

25273021 is a deficient number, since it is larger than the sum of its proper divisors (2743619).

25273021 is a wasteful number, since it uses less digits than its factorization.

25273021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25273021 is about 5027.2279637987. The cubic root of 25273021 is about 293.4623466870.

The spelling of 25273021 in words is "twenty-five million, two hundred seventy-three thousand, twenty-one".