25251451 has 2 divisors, whose sum is σ = 25251452. Its totient is φ = 25251450.

The previous prime is 25251407. The next prime is 25251463. The reversal of 25251451 is 15415252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25251451 is a prime.

It is not a weakly prime, because it can be changed into another prime (25254451) 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, 12625725 + 12625726.

It is an arithmetic number, because the mean of its divisors is an integer number (12625726).

Almost surely, 2^25251451 is an apocalyptic number.

25251451 is a deficient number, since it is larger than the sum of its proper divisors (1).

25251451 is an equidigital number, since it uses as much as digits as its factorization.

25251451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2000, while the sum is 25.

The square root of 25251451 is about 5025.0821883826. The cubic root of 25251451 is about 293.3788349123.

The spelling of 25251451 in words is "twenty-five million, two hundred fifty-one thousand, four hundred fifty-one".