25220571 has 8 divisors (see below), whose sum is σ = 35605584. Its totient is φ = 15824640.

The previous prime is 25220557. The next prime is 25220579. The reversal of 25220571 is 17502252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25220571 - 2¹³ = 25212379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25220579) 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 in 7 ways as a sum of consecutive naturals, for example, 247210 + ... + 247311.

It is an arithmetic number, because the mean of its divisors is an integer number (4450698).

Almost surely, 2^25220571 is an apocalyptic number.

25220571 is a deficient number, since it is larger than the sum of its proper divisors (10385013).

25220571 is a wasteful number, since it uses less digits than its factorization.

25220571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494541.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 25220571 is about 5022.0086618802. The cubic root of 25220571 is about 293.2591951353.

The spelling of 25220571 in words is "twenty-five million, two hundred twenty thousand, five hundred seventy-one".