25213742 has 4 divisors (see below), whose sum is σ = 37820616. Its totient is φ = 12606870.

The previous prime is 25213739. The next prime is 25213751. The reversal of 25213742 is 24731252.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6303434 + ... + 6303437.

It is an arithmetic number, because the mean of its divisors is an integer number (9455154).

Almost surely, 2^25213742 is an apocalyptic number.

25213742 is a deficient number, since it is larger than the sum of its proper divisors (12606874).

25213742 is a wasteful number, since it uses less digits than its factorization.

25213742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12606873.

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

The square root of 25213742 is about 5021.3287086189. The cubic root of 25213742 is about 293.2327240478.

Adding to 25213742 its reverse (24731252), we get a palindrome (49944994).

The spelling of 25213742 in words is "twenty-five million, two hundred thirteen thousand, seven hundred forty-two".