25998073 has 4 divisors (see below), whose sum is σ = 27128448. Its totient is φ = 24867700.

The previous prime is 25998067. The next prime is 25998103. The reversal of 25998073 is 37089952.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 25998073 - 2⁵ = 25998041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25998053) 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, 565153 + ... + 565198.

It is an arithmetic number, because the mean of its divisors is an integer number (6782112).

Almost surely, 2^25998073 is an apocalyptic number.

25998073 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25998073 is a deficient number, since it is larger than the sum of its proper divisors (1130375).

25998073 is a wasteful number, since it uses less digits than its factorization.

25998073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130374.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 25998073 is about 5098.8305521953. The cubic root of 25998073 is about 296.2422877754.

The spelling of 25998073 in words is "twenty-five million, nine hundred ninety-eight thousand, seventy-three".