25047143 has 4 divisors (see below), whose sum is σ = 27324168. Its totient is φ = 22770120.

The previous prime is 25047133. The next prime is 25047221. The reversal of 25047143 is 34174052.

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

It is a cyclic number.

It is not a de Polignac number, because 25047143 - 2¹² = 25043047 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 (25047133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138496 + ... + 1138517.

It is an arithmetic number, because the mean of its divisors is an integer number (6831042).

Almost surely, 2^25047143 is an apocalyptic number.

25047143 is a deficient number, since it is larger than the sum of its proper divisors (2277025).

25047143 is a wasteful number, since it uses less digits than its factorization.

25047143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277024.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 25047143 is about 5004.7120796306. The cubic root of 25047143 is about 292.5854543706.

The spelling of 25047143 in words is "twenty-five million, forty-seven thousand, one hundred forty-three".