25143532 has 6 divisors (see below), whose sum is σ = 44001188. Its totient is φ = 12571764.

The previous prime is 25143509. The next prime is 25143539. The reversal of 25143532 is 23534152.

It is a junction number, because it is equal to n+sod(n) for n = 25143497 and 25143506.

It is not an unprimeable number, because it can be changed into a prime (25143539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3142938 + ... + 3142945.

Almost surely, 2^25143532 is an apocalyptic number.

It is an amenable number.

25143532 is a deficient number, since it is larger than the sum of its proper divisors (18857656).

25143532 is a wasteful number, since it uses less digits than its factorization.

25143532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6285887 (or 6285885 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 25143532 is about 5014.3326574929. The cubic root of 25143532 is about 292.9602931279.

Adding to 25143532 its reverse (23534152), we get a palindrome (48677684).

The spelling of 25143532 in words is "twenty-five million, one hundred forty-three thousand, five hundred thirty-two".