25490970 has 64 divisors (see below), whose sum is σ = 71568000. Its totient is φ = 6438528.

The previous prime is 25490963. The next prime is 25490981. The reversal of 25490970 is 7909452.

It is a Curzon number.

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, 2646 + ... + 7614.

It is an arithmetic number, because the mean of its divisors is an integer number (1118250).

Almost surely, 2^25490970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25490970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35784000).

25490970 is an abundant number, since it is smaller than the sum of its proper divisors (46077030).

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

25490970 is a wasteful number, since it uses less digits than its factorization.

25490970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004 (or 4998 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 25490970 is about 5048.8582867813. The cubic root of 25490970 is about 294.3035182842.

The spelling of 25490970 in words is "twenty-five million, four hundred ninety thousand, nine hundred seventy".