25427550 has 48 divisors (see below), whose sum is σ = 63388800. Its totient is φ = 6745440.

The previous prime is 25427539. The next prime is 25427551. The reversal of 25427550 is 5572452.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25427551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42151 + ... + 42749.

It is an arithmetic number, because the mean of its divisors is an integer number (1320600).

Almost surely, 2^25427550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25427550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31694400).

25427550 is an abundant number, since it is smaller than the sum of its proper divisors (37961250).

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

25427550 is a wasteful number, since it uses less digits than its factorization.

25427550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 25427550 is about 5042.5737476015. The cubic root of 25427550 is about 294.0592457769.

The spelling of 25427550 in words is "twenty-five million, four hundred twenty-seven thousand, five hundred fifty".