25252646 has 4 divisors (see below), whose sum is σ = 37878972. Its totient is φ = 12626322.

The previous prime is 25252639. The next prime is 25252663. The reversal of 25252646 is 64625252.

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

It is a super-2 number, since 2×25252646² = 1275392260002632, which contains 22 as substring.

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, 6313160 + ... + 6313163.

It is an arithmetic number, because the mean of its divisors is an integer number (9469743).

Almost surely, 2^25252646 is an apocalyptic number.

25252646 is a deficient number, since it is larger than the sum of its proper divisors (12626326).

25252646 is a wasteful number, since it uses less digits than its factorization.

25252646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12626325.

The product of its digits is 28800, while the sum is 32.

The square root of 25252646 is about 5025.2010905037. The cubic root of 25252646 is about 293.3834627939.

Adding to 25252646 its reverse (64625252), we get a palindrome (89877898).

The spelling of 25252646 in words is "twenty-five million, two hundred fifty-two thousand, six hundred forty-six".