25915451 has 2 divisors, whose sum is σ = 25915452. Its totient is φ = 25915450.

The previous prime is 25915433. The next prime is 25915469. The reversal of 25915451 is 15451952.

It is a balanced prime because it is at equal distance from previous prime (25915433) and next prime (25915469).

It is a cyclic number.

It is not a de Polignac number, because 25915451 - 2¹⁸ = 25653307 is a prime.

It is a super-2 number, since 2×25915451² = 1343221201066802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25915481) 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 as a sum of consecutive naturals, namely, 12957725 + 12957726.

It is an arithmetic number, because the mean of its divisors is an integer number (12957726).

Almost surely, 2^25915451 is an apocalyptic number.

25915451 is a deficient number, since it is larger than the sum of its proper divisors (1).

25915451 is an equidigital number, since it uses as much as digits as its factorization.

25915451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 32.

The square root of 25915451 is about 5090.7220509472. The cubic root of 25915451 is about 295.9281349457.

The spelling of 25915451 in words is "twenty-five million, nine hundred fifteen thousand, four hundred fifty-one".