25552777777552 has 10 divisors (see below), whose sum is σ = 49508506944038. Its totient is φ = 12776388888768.

The previous prime is 25552777777543. The next prime is 25552777777561. The reversal of 25552777777552 is 25577777725552.

It is an interprime number because it is at equal distance from previous prime (25552777777543) and next prime (25552777777561).

It can be written as a sum of positive squares in only one way, i.e., 25504762450176 + 48015327376 = 5050224^2 + 219124^2 .

It is a super-2 number, since 2×25552777777552² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 798524305533 + ... + 798524305564.

Almost surely, 2^{25552777777552} is an apocalyptic number.

It is an amenable number.

25552777777552 is a deficient number, since it is larger than the sum of its proper divisors (23955729166486).

25552777777552 is a wasteful number, since it uses less digits than its factorization.

25552777777552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597048611105 (or 1597048611099 counting only the distinct ones).

The product of its digits is 2941225000, while the sum is 73.

The spelling of 25552777777552 in words is "twenty-five trillion, five hundred fifty-two billion, seven hundred seventy-seven million, seven hundred seventy-seven thousand, five hundred fifty-two".