25454042 has 4 divisors (see below), whose sum is σ = 38181066. Its totient is φ = 12727020.

The previous prime is 25454021. The next prime is 25454057. The reversal of 25454042 is 24045452.

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

It can be written as a sum of positive squares in only one way, i.e., 15912121 + 9541921 = 3989^2 + 3089^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6363509 + ... + 6363512.

Almost surely, 2^25454042 is an apocalyptic number.

25454042 is a deficient number, since it is larger than the sum of its proper divisors (12727024).

25454042 is a wasteful number, since it uses less digits than its factorization.

25454042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12727023.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 25454042 is about 5045.1998969317. The cubic root of 25454042 is about 294.1613333900.

Adding to 25454042 its reverse (24045452), we get a palindrome (49499494).

The spelling of 25454042 in words is "twenty-five million, four hundred fifty-four thousand, forty-two".