25487020 has 48 divisors (see below), whose sum is σ = 58621248. Its totient is φ = 9250560.

The previous prime is 25487017. The next prime is 25487057. The reversal of 25487020 is 2078452.

It is a self number, because there is not a number n which added to its sum of digits gives 25487020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15057 + ... + 16663.

It is an arithmetic number, because the mean of its divisors is an integer number (1221276).

Almost surely, 2^25487020 is an apocalyptic number.

25487020 is a gapful number since it is divisible by the number (20) 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 25487020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29310624).

25487020 is an abundant number, since it is smaller than the sum of its proper divisors (33134228).

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

25487020 is a wasteful number, since it uses less digits than its factorization.

25487020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690 (or 1688 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 25487020 is about 5048.4670940792. The cubic root of 25487020 is about 294.2883160518.

The spelling of 25487020 in words is "twenty-five million, four hundred eighty-seven thousand, twenty".