25485558 has 32 divisors (see below), whose sum is σ = 58997760. Its totient is φ = 7188480.

The previous prime is 25485553. The next prime is 25485569. The reversal of 25485558 is 85558452.

It is a super-3 number, since 3×25485558³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25485553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523 + ... + 7158.

It is an arithmetic number, because the mean of its divisors is an integer number (1843680).

Almost surely, 2^25485558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25485558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29498880).

25485558 is an abundant number, since it is smaller than the sum of its proper divisors (33512202).

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

25485558 is a wasteful number, since it uses less digits than its factorization.

25485558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772.

The product of its digits is 320000, while the sum is 42.

The square root of 25485558 is about 5048.3222955750. The cubic root of 25485558 is about 294.2826889033.

The spelling of 25485558 in words is "twenty-five million, four hundred eighty-five thousand, five hundred fifty-eight".