25752243458 has 18 divisors (see below), whose sum is σ = 39389351547. Its totient is φ = 12627275440.

The previous prime is 25752243449. The next prime is 25752243463. The reversal of 25752243458 is 85434225752.

It can be written as a sum of positive squares in 5 ways, for example, as 25748374369 + 3869089 = 160463^2 + 1967^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=113473.

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, 12027068 + ... + 12029208.

Almost surely, 2^25752243458 is an apocalyptic number.

25752243458 is a deficient number, since it is larger than the sum of its proper divisors (13637108089).

25752243458 is an frugal number, since it uses more digits than its factorization.

25752243458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390 (or 2196 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 47.

The spelling of 25752243458 in words is "twenty-five billion, seven hundred fifty-two million, two hundred forty-three thousand, four hundred fifty-eight".