25490038336 has 63 divisors (see below), whose sum is σ = 58860692667. Its totient is φ = 10920470400.

The previous prime is 25490038333. The next prime is 25490038337. The reversal of 25490038336 is 63383009452.

The square root of 25490038336 is 159656.

It is a perfect power (a square), and thus also a powerful number.

It is a junction number, because it is equal to n+sod(n) for n = 25490038292 and 25490038301.

It is not an unprimeable number, because it can be changed into a prime (25490038333) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8939311 + ... + 8942161.

It is an arithmetic number, because the mean of its divisors is an integer number (934296709).

Almost surely, 2^25490038336 is an apocalyptic number.

25490038336 is the 159656-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25490038336

25490038336 is an abundant number, since it is smaller than the sum of its proper divisors (33370654331).

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

25490038336 is an frugal number, since it uses more digits than its factorization.

25490038336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5728 (or 2860 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 25490038336 in words is "twenty-five billion, four hundred ninety million, thirty-eight thousand, three hundred thirty-six".