25398159424 has 63 divisors (see below), whose sum is σ = 55428373903. Its totient is φ = 11538243200.

The previous prime is 25398159401. The next prime is 25398159467. The reversal of 25398159424 is 42495189352.

It is a happy number.

The square root of 25398159424 is 159368.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14023479 + ... + 14025289.

Almost surely, 2^25398159424 is an apocalyptic number.

25398159424 is the 159368-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25398159424

25398159424 is an abundant number, since it is smaller than the sum of its proper divisors (30030214479).

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

25398159424 is an frugal number, since it uses more digits than its factorization.

25398159424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656 (or 1824 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 52.

The spelling of 25398159424 in words is "twenty-five billion, three hundred ninety-eight million, one hundred fifty-nine thousand, four hundred twenty-four".