25059721 has 4 divisors (see below), whose sum is σ = 25294032. Its totient is φ = 24825412.

The previous prime is 25059709. The next prime is 25059737. The reversal of 25059721 is 12795052.

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 25059721 - 2¹³ = 25051529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25059701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116995 + ... + 117208.

It is an arithmetic number, because the mean of its divisors is an integer number (6323508).

Almost surely, 2^25059721 is an apocalyptic number.

It is an amenable number.

25059721 is a deficient number, since it is larger than the sum of its proper divisors (234311).

25059721 is a wasteful number, since it uses less digits than its factorization.

25059721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234310.

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

The square root of 25059721 is about 5005.9685376558. The cubic root of 25059721 is about 292.6344223506.

The spelling of 25059721 in words is "twenty-five million, fifty-nine thousand, seven hundred twenty-one".