25480143 has 32 divisors (see below), whose sum is σ = 40958400. Its totient is φ = 15562368.

The previous prime is 25480129. The next prime is 25480151. The reversal of 25480143 is 34108452.

It is not a de Polignac number, because 25480143 - 2⁵ = 25480111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25480643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80221 + ... + 80537.

It is an arithmetic number, because the mean of its divisors is an integer number (1279950).

Almost surely, 2^25480143 is an apocalyptic number.

25480143 is a deficient number, since it is larger than the sum of its proper divisors (15478257).

25480143 is a wasteful number, since it uses less digits than its factorization.

25480143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 25480143 is about 5047.7859502954. The cubic root of 25480143 is about 294.2618450246.

Adding to 25480143 its reverse (34108452), we get a palindrome (59588595).

The spelling of 25480143 in words is "twenty-five million, four hundred eighty thousand, one hundred forty-three".