25658651 has 2 divisors, whose sum is σ = 25658652. Its totient is φ = 25658650.

The previous prime is 25658641. The next prime is 25658657. The reversal of 25658651 is 15685652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25658651 - 2⁶ = 25658587 is a prime.

It is a super-2 number, since 2×25658651² = 1316732742279602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25658657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12829325 + 12829326.

It is an arithmetic number, because the mean of its divisors is an integer number (12829326).

Almost surely, 2^25658651 is an apocalyptic number.

25658651 is a deficient number, since it is larger than the sum of its proper divisors (1).

25658651 is an equidigital number, since it uses as much as digits as its factorization.

25658651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 38.

The square root of 25658651 is about 5065.4369011962. The cubic root of 25658651 is about 294.9474233601.

The spelling of 25658651 in words is "twenty-five million, six hundred fifty-eight thousand, six hundred fifty-one".