25420432 has 10 divisors (see below), whose sum is σ = 49252118. Its totient is φ = 12710208.

The previous prime is 25420427. The next prime is 25420433. The reversal of 25420432 is 23402452.

It can be written as a sum of positive squares in only one way, i.e., 23970816 + 1449616 = 4896^2 + 1204^2 .

It is not an unprimeable number, because it can be changed into a prime (25420433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 794373 + ... + 794404.

Almost surely, 2^25420432 is an apocalyptic number.

It is an amenable number.

25420432 is a deficient number, since it is larger than the sum of its proper divisors (23831686).

25420432 is a wasteful number, since it uses less digits than its factorization.

25420432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588785 (or 1588779 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 25420432 is about 5041.8679078294. The cubic root of 25420432 is about 294.0318042938.

Adding to 25420432 its reverse (23402452), we get a palindrome (48822884).

It can be divided in two parts, 25420 and 432, that added together give a palindrome (25852).

The spelling of 25420432 in words is "twenty-five million, four hundred twenty thousand, four hundred thirty-two".