25578151 has 2 divisors, whose sum is σ = 25578152. Its totient is φ = 25578150.

The previous prime is 25578127. The next prime is 25578167. The reversal of 25578151 is 15187552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25578151 - 2¹³ = 25569959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25578101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12789075 + 12789076.

It is an arithmetic number, because the mean of its divisors is an integer number (12789076).

Almost surely, 2^25578151 is an apocalyptic number.

25578151 is a deficient number, since it is larger than the sum of its proper divisors (1).

25578151 is an equidigital number, since it uses as much as digits as its factorization.

25578151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14000, while the sum is 34.

The square root of 25578151 is about 5057.4846514844. The cubic root of 25578151 is about 294.6386497719.

The spelling of 25578151 in words is "twenty-five million, five hundred seventy-eight thousand, one hundred fifty-one".