25000542 has 96 divisors (see below), whose sum is σ = 67987200. Its totient is φ = 6652368.

The previous prime is 25000541. The next prime is 25000543. The reversal of 25000542 is 24500052.

It is an interprime number because it is at equal distance from previous prime (25000541) and next prime (25000543).

It is a Harshad number since it is a multiple of its sum of digits (18).

25000542 is a modest number, since divided by 542 gives 250 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 423709 + ... + 423767.

It is an arithmetic number, because the mean of its divisors is an integer number (708200).

Almost surely, 2^25000542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25000542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33993600).

25000542 is an abundant number, since it is smaller than the sum of its proper divisors (42986658).

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

25000542 is a wasteful number, since it uses less digits than its factorization.

25000542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 25000542 is about 5000.0541997062. The cubic root of 25000542 is about 292.4038868962.

Adding to 25000542 its reverse (24500052), we get a palindrome (49500594).

It can be divided in two parts, 250005 and 42, that added together give a cube (250047 = 63³).

The spelling of 25000542 in words is "twenty-five million, five hundred forty-two", and thus it is an aban number.