25147020 has 48 divisors (see below), whose sum is σ = 71053920. Its totient is φ = 6644736.

The previous prime is 25147019. The next prime is 25147037. The reversal of 25147020 is 2074152.

It is a super-2 number, since 2×25147020² = 1264745229760800, which contains 22 as substring.

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, 4926 + ... + 8634.

It is an arithmetic number, because the mean of its divisors is an integer number (1480290).

Almost surely, 2^25147020 is an apocalyptic number.

25147020 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 25147020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35526960).

25147020 is an abundant number, since it is smaller than the sum of its proper divisors (45906900).

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

25147020 is a wasteful number, since it uses less digits than its factorization.

25147020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834 (or 3832 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 25147020 is about 5014.6804484434. The cubic root of 25147020 is about 292.9738393320.

The spelling of 25147020 in words is "twenty-five million, one hundred forty-seven thousand, twenty".