25950721 has 8 divisors (see below), whose sum is σ = 28062720. Its totient is φ = 23903808.

The previous prime is 25950719. The next prime is 25950767. The reversal of 25950721 is 12705952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25950721 - 2¹ = 25950719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25950781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15441 + ... + 17038.

It is an arithmetic number, because the mean of its divisors is an integer number (3507840).

Almost surely, 2^25950721 is an apocalyptic number.

It is an amenable number.

25950721 is a deficient number, since it is larger than the sum of its proper divisors (2111999).

25950721 is a wasteful number, since it uses less digits than its factorization.

25950721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32543.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25950721 is about 5094.1850182340. The cubic root of 25950721 is about 296.0623232842.

The spelling of 25950721 in words is "twenty-five million, nine hundred fifty thousand, seven hundred twenty-one".