25266545 has 4 divisors (see below), whose sum is σ = 30319860. Its totient is φ = 20213232.

The previous prime is 25266533. The next prime is 25266551. The reversal of 25266545 is 54566252.

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 3996001 + 21270544 = 1999^2 + 4612^2 .

It is a cyclic number.

It is not a de Polignac number, because 25266545 - 2⁸ = 25266289 is a prime.

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, 2526650 + ... + 2526659.

It is an arithmetic number, because the mean of its divisors is an integer number (7579965).

Almost surely, 2^25266545 is an apocalyptic number.

It is an amenable number.

25266545 is a deficient number, since it is larger than the sum of its proper divisors (5053315).

25266545 is an equidigital number, since it uses as much as digits as its factorization.

25266545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053314.

The product of its digits is 72000, while the sum is 35.

The square root of 25266545 is about 5026.5838299983. The cubic root of 25266545 is about 293.4372787895.

The spelling of 25266545 in words is "twenty-five million, two hundred sixty-six thousand, five hundred forty-five".