25221452 has 6 divisors (see below), whose sum is σ = 44137548. Its totient is φ = 12610724.

The previous prime is 25221419. The next prime is 25221467. The reversal of 25221452 is 25412252.

It is a super-2 number, since 2×25221452² = 1272243281976608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3152678 + ... + 3152685.

It is an arithmetic number, because the mean of its divisors is an integer number (7356258).

Almost surely, 2^25221452 is an apocalyptic number.

It is an amenable number.

25221452 is a deficient number, since it is larger than the sum of its proper divisors (18916096).

25221452 is a wasteful number, since it uses less digits than its factorization.

25221452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305367 (or 6305365 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 25221452 is about 5022.0963750211. The cubic root of 25221452 is about 293.2626097863.

The spelling of 25221452 in words is "twenty-five million, two hundred twenty-one thousand, four hundred fifty-two".