25216532 has 24 divisors (see below), whose sum is σ = 48320832. Its totient is φ = 11419200.

The previous prime is 25216507. The next prime is 25216567. The reversal of 25216532 is 23561252.

It is a super-2 number, since 2×25216532² = 1271746972214048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12857 + ... + 14687.

It is an arithmetic number, because the mean of its divisors is an integer number (2013368).

Almost surely, 2^25216532 is an apocalyptic number.

25216532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25216532 is a deficient number, since it is larger than the sum of its proper divisors (23104300).

25216532 is a wasteful number, since it uses less digits than its factorization.

25216532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159 (or 2157 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 25216532 is about 5021.6065158473. The cubic root of 25216532 is about 293.2435394347.

Adding to 25216532 its reverse (23561252), we get a palindrome (48777784).

The spelling of 25216532 in words is "twenty-five million, two hundred sixteen thousand, five hundred thirty-two".