25713442 has 4 divisors (see below), whose sum is σ = 38570166. Its totient is φ = 12856720.

The previous prime is 25713433. The next prime is 25713449. The reversal of 25713442 is 24431752.

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., 19900521 + 5812921 = 4461^2 + 2411^2 .

It is a super-2 number, since 2×25713442² = 1322362198974728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25713442.

It is not an unprimeable number, because it can be changed into a prime (25713449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6428359 + ... + 6428362.

Almost surely, 2^25713442 is an apocalyptic number.

25713442 is a deficient number, since it is larger than the sum of its proper divisors (12856724).

25713442 is a wasteful number, since it uses less digits than its factorization.

25713442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856723.

The product of its digits is 6720, while the sum is 28.

The square root of 25713442 is about 5070.8423363382. The cubic root of 25713442 is about 295.1572158258.

It can be divided in two parts, 257134 and 42, that multiplied together give a triangular number (10799628 = T₄₆₄₇).

The spelling of 25713442 in words is "twenty-five million, seven hundred thirteen thousand, four hundred forty-two".