25140390 has 128 divisors (see below), whose sum is σ = 70917120. Its totient is φ = 5644800.

The previous prime is 25140389. The next prime is 25140457. The reversal of 25140390 is 9304152.

It is a self number, because there is not a number n which added to its sum of digits gives 25140390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 354055 + ... + 354125.

It is an arithmetic number, because the mean of its divisors is an integer number (554040).

Almost surely, 2^25140390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25140390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35458560).

25140390 is an abundant number, since it is smaller than the sum of its proper divisors (45776730).

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

25140390 is a wasteful number, since it uses less digits than its factorization.

25140390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 25140390 is about 5014.0193457943. The cubic root of 25140390 is about 292.9480895973.

The spelling of 25140390 in words is "twenty-five million, one hundred forty thousand, three hundred ninety".