25040988 has 120 divisors (see below), whose sum is σ = 76460384. Its totient is φ = 6998400.

The previous prime is 25040987. The next prime is 25041001. The reversal of 25040988 is 88904052.

It is a super-2 number, since 2×25040988² = 1254102160032288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 138258 + ... + 138438.

Almost surely, 2^25040988 is an apocalyptic number.

25040988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25040988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38230192).

25040988 is an abundant number, since it is smaller than the sum of its proper divisors (51419396).

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

25040988 is a wasteful number, since it uses less digits than its factorization.

25040988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 25040988 is about 5004.0971213597. The cubic root of 25040988 is about 292.5614860880.

The spelling of 25040988 in words is "twenty-five million, forty thousand, nine hundred eighty-eight".