2625398014864 has 135 divisors (see below), whose sum is σ = 5359014409329. Its totient is φ = 1245952039680.

The previous prime is 2625398014817. The next prime is 2625398014879. The reversal of 2625398014864 is 4684108935262.

It is a happy number.

The square root of 2625398014864 is 1620308.

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

It can be written as a sum of positive squares in only one way, i.e., 1490303808400 + 1135094206464 = 1220780^2 + 1065408^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2625398014799 and 2625398014808.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14667027927 + ... + 14667028105.

Almost surely, 2^{2625398014864} is an apocalyptic number.

2625398014864 is the 1620308-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2625398014864

2625398014864 is an abundant number, since it is smaller than the sum of its proper divisors (2733616394465).

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

2625398014864 is an frugal number, since it uses more digits than its factorization.

2625398014864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 2625398014864 in words is "two trillion, six hundred twenty-five billion, three hundred ninety-eight million, fourteen thousand, eight hundred sixty-four".