25509652 has 24 divisors (see below), whose sum is σ = 52666880. Its totient is φ = 10579680.

The previous prime is 25509643. The next prime is 25509709. The reversal of 25509652 is 25690552.

It is a super-2 number, since 2×25509652² = 1301484690322208, 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 in 7 ways as a sum of consecutive naturals, for example, 13827 + ... + 15562.

Almost surely, 2^25509652 is an apocalyptic number.

It is an amenable number.

25509652 is an abundant number, since it is smaller than the sum of its proper divisors (27157228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25509652 is a wasteful number, since it uses less digits than its factorization.

25509652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29431 (or 29429 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 25509652 is about 5050.7080691721. The cubic root of 25509652 is about 294.3753977994.

The spelling of 25509652 in words is "twenty-five million, five hundred nine thousand, six hundred fifty-two".