25321251 has 8 divisors (see below), whose sum is σ = 33785424. Its totient is φ = 16868960.

The previous prime is 25321249. The next prime is 25321253. The reversal of 25321251 is 15212352.

It is an interprime number because it is at equal distance from previous prime (25321249) and next prime (25321253).

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 25321251 - 2¹ = 25321249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25321253) 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, 5281 + ... + 8861.

It is an arithmetic number, because the mean of its divisors is an integer number (4223178).

Almost surely, 2^25321251 is an apocalyptic number.

25321251 is a deficient number, since it is larger than the sum of its proper divisors (8464173).

25321251 is a wasteful number, since it uses less digits than its factorization.

25321251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5941.

The product of its digits is 600, while the sum is 21.

The square root of 25321251 is about 5032.0225555933. The cubic root of 25321251 is about 293.6489052452.

The spelling of 25321251 in words is "twenty-five million, three hundred twenty-one thousand, two hundred fifty-one".