25970993 has 4 divisors (see below), whose sum is σ = 25981440. Its totient is φ = 25960548.

The previous prime is 25970983. The next prime is 25971031. The reversal of 25970993 is 39907952.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25970993 - 2⁴ = 25970977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25970983) 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, 896 + ... + 7262.

It is an arithmetic number, because the mean of its divisors is an integer number (6495360).

Almost surely, 2^25970993 is an apocalyptic number.

It is an amenable number.

25970993 is a deficient number, since it is larger than the sum of its proper divisors (10447).

25970993 is an equidigital number, since it uses as much as digits as its factorization.

25970993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10446.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 25970993 is about 5096.1743494508. The cubic root of 25970993 is about 296.1393951734.

The spelling of 25970993 in words is "twenty-five million, nine hundred seventy thousand, nine hundred ninety-three".