25722434 has 4 divisors (see below), whose sum is σ = 38583654. Its totient is φ = 12861216.

The previous prime is 25722427. The next prime is 25722443. The reversal of 25722434 is 43422752.

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., 14799409 + 10923025 = 3847^2 + 3305^2 .

It is a super-2 number, since 2×25722434² = 1323287221768712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25722397 and 25722406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430607 + ... + 6430610.

Almost surely, 2^25722434 is an apocalyptic number.

25722434 is a deficient number, since it is larger than the sum of its proper divisors (12861220).

25722434 is a wasteful number, since it uses less digits than its factorization.

25722434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12861219.

The product of its digits is 13440, while the sum is 29.

The square root of 25722434 is about 5071.7288965401. The cubic root of 25722434 is about 295.1916173446.

The spelling of 25722434 in words is "twenty-five million, seven hundred twenty-two thousand, four hundred thirty-four".