25266385 has 4 divisors (see below), whose sum is σ = 30319668. Its totient is φ = 20213104.

The previous prime is 25266361. The next prime is 25266427. The reversal of 25266385 is 58366252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3101121 + 22165264 = 1761^2 + 4708^2 .

It is a cyclic number.

It is not a de Polignac number, because 25266385 - 2¹⁹ = 24742097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2526634 + ... + 2526643.

It is an arithmetic number, because the mean of its divisors is an integer number (7579917).

Almost surely, 2^25266385 is an apocalyptic number.

It is an amenable number.

25266385 is a deficient number, since it is larger than the sum of its proper divisors (5053283).

25266385 is an equidigital number, since it uses as much as digits as its factorization.

25266385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053282.

The product of its digits is 86400, while the sum is 37.

The square root of 25266385 is about 5026.5679145914. The cubic root of 25266385 is about 293.4366593925.

It can be divided in two parts, 25266 and 385, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 25266385 in words is "twenty-five million, two hundred sixty-six thousand, three hundred eighty-five".