25247271 has 8 divisors (see below), whose sum is σ = 38472064. Its totient is φ = 14427000.

The previous prime is 25247249. The next prime is 25247281. The reversal of 25247271 is 17274252.

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

It is not a de Polignac number, because 25247271 - 2¹⁷ = 25116199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25247231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601105 + ... + 601146.

It is an arithmetic number, because the mean of its divisors is an integer number (4809008).

Almost surely, 2^25247271 is an apocalyptic number.

25247271 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25247271 is a deficient number, since it is larger than the sum of its proper divisors (13224793).

25247271 is a wasteful number, since it uses less digits than its factorization.

25247271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202261.

The product of its digits is 7840, while the sum is 30.

The square root of 25247271 is about 5024.6662575737. Note that the first 3 decimals coincide. The cubic root of 25247271 is about 293.3626458598.

The spelling of 25247271 in words is "twenty-five million, two hundred forty-seven thousand, two hundred seventy-one".