25212755 has 4 divisors (see below), whose sum is σ = 30255312. Its totient is φ = 20170200.

The previous prime is 25212713. The next prime is 25212767. The reversal of 25212755 is 55721252.

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

It is a de Polignac number, because none of the positive numbers 2^k-25212755 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, 2521271 + ... + 2521280.

It is an arithmetic number, because the mean of its divisors is an integer number (7563828).

Almost surely, 2^25212755 is an apocalyptic number.

25212755 is a deficient number, since it is larger than the sum of its proper divisors (5042557).

25212755 is an equidigital number, since it uses as much as digits as its factorization.

25212755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042556.

The product of its digits is 7000, while the sum is 29.

The square root of 25212755 is about 5021.2304268974. The cubic root of 25212755 is about 293.2288977682.

The spelling of 25212755 in words is "twenty-five million, two hundred twelve thousand, seven hundred fifty-five".