25131622 has 4 divisors (see below), whose sum is σ = 37697436. Its totient is φ = 12565810.

The previous prime is 25131611. The next prime is 25131629. The reversal of 25131622 is 22613152.

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

It is a junction number, because it is equal to n+sod(n) for n = 25131593 and 25131602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25131629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6282904 + ... + 6282907.

It is an arithmetic number, because the mean of its divisors is an integer number (9424359).

Almost surely, 2^25131622 is an apocalyptic number.

25131622 is a deficient number, since it is larger than the sum of its proper divisors (12565814).

25131622 is a wasteful number, since it uses less digits than its factorization.

25131622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12565813.

The product of its digits is 720, while the sum is 22.

The square root of 25131622 is about 5013.1449211049. The cubic root of 25131622 is about 292.9140292994.

Adding to 25131622 its reverse (22613152), we get a palindrome (47744774).

The spelling of 25131622 in words is "twenty-five million, one hundred thirty-one thousand, six hundred twenty-two".