25532550 has 48 divisors (see below), whose sum is σ = 70360080. Its totient is φ = 6808320.

The previous prime is 25532537. The next prime is 25532569. The reversal of 25532550 is 5523552.

It is a super-2 number, since 2×25532550² = 1303822219005000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8107 + ... + 10806.

It is an arithmetic number, because the mean of its divisors is an integer number (1465835).

Almost surely, 2^25532550 is an apocalyptic number.

25532550 is an abundant number, since it is smaller than the sum of its proper divisors (44827530).

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

25532550 is a wasteful number, since it uses less digits than its factorization.

25532550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18934 (or 18923 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 25532550 is about 5052.9743715954. The cubic root of 25532550 is about 294.4634506408.

The spelling of 25532550 in words is "twenty-five million, five hundred thirty-two thousand, five hundred fifty".