25143481 has 8 divisors (see below), whose sum is σ = 27468000. Its totient is φ = 22825440.

The previous prime is 25143427. The next prime is 25143487. The reversal of 25143481 is 18434152.

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

It is not a de Polignac number, because 25143481 - 2¹¹ = 25141433 is a prime.

It is a super-2 number, since 2×25143481² = 1264389273594722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25143487) 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, 10450 + ... + 12628.

It is an arithmetic number, because the mean of its divisors is an integer number (3433500).

Almost surely, 2^25143481 is an apocalyptic number.

It is an amenable number.

25143481 is a deficient number, since it is larger than the sum of its proper divisors (2324519).

25143481 is a wasteful number, since it uses less digits than its factorization.

25143481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239.

The product of its digits is 3840, while the sum is 28.

The square root of 25143481 is about 5014.3275720679. The cubic root of 25143481 is about 292.9600950519.

It can be divided in two parts, 2514 and 3481, that added together give a palindrome (5995).

The spelling of 25143481 in words is "twenty-five million, one hundred forty-three thousand, four hundred eighty-one".