25193490 has 64 divisors (see below), whose sum is σ = 73177344. Its totient is φ = 5419008.

The previous prime is 25193479. The next prime is 25193503. The reversal of 25193490 is 9439152.

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, 42 + ... + 7098.

It is an arithmetic number, because the mean of its divisors is an integer number (1143396).

Almost surely, 2^25193490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25193490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36588672).

25193490 is an abundant number, since it is smaller than the sum of its proper divisors (47983854).

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

25193490 is a wasteful number, since it uses less digits than its factorization.

25193490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 25193490 is about 5019.3117058019. The cubic root of 25193490 is about 293.1541935939.

The spelling of 25193490 in words is "twenty-five million, one hundred ninety-three thousand, four hundred ninety".