25090890 has 64 divisors (see below), whose sum is σ = 66286080. Its totient is φ = 6027840.

The previous prime is 25090883. The next prime is 25090927. The reversal of 25090890 is 9809052.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45597 + ... + 46143.

It is an arithmetic number, because the mean of its divisors is an integer number (1035720).

Almost surely, 2^25090890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25090890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33143040).

25090890 is an abundant number, since it is smaller than the sum of its proper divisors (41195190).

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

25090890 is a wasteful number, since it uses less digits than its factorization.

25090890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 25090890 is about 5009.0807539907. The cubic root of 25090890 is about 292.7556972222.

The spelling of 25090890 in words is "twenty-five million, ninety thousand, eight hundred ninety".