25531612 has 12 divisors (see below), whose sum is σ = 44719360. Its totient is φ = 12754656.

The previous prime is 25531607. The next prime is 25531619. The reversal of 25531612 is 21613552.

It is a super-2 number, since 2×25531612² = 1303726422637088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25531619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4453 + ... + 8419.

Almost surely, 2^25531612 is an apocalyptic number.

It is an amenable number.

25531612 is a deficient number, since it is larger than the sum of its proper divisors (19187748).

25531612 is a wasteful number, since it uses less digits than its factorization.

25531612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580 (or 5578 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 25531612 is about 5052.8815541233. The cubic root of 25531612 is about 294.4598446542.

The spelling of 25531612 in words is "twenty-five million, five hundred thirty-one thousand, six hundred twelve".