1275023977525 has 6 divisors (see below), whose sum is σ = 1581029732162. Its totient is φ = 1020019182000.

The previous prime is 1275023977517. The next prime is 1275023977543. The reversal of 1275023977525 is 5257793205721.

It can be written as a sum of positive squares in 3 ways, for example, as 3269323684 + 1271754653841 = 57178^2 + 1127721^2 .

It is not a de Polignac number, because 1275023977525 - 2³ = 1275023977517 is a prime.

It is a super-2 number, since 2×1275023977525² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25500479526 + ... + 25500479575.

Almost surely, 2^{1275023977525} is an apocalyptic number.

It is an amenable number.

1275023977525 is a deficient number, since it is larger than the sum of its proper divisors (306005754637).

1275023977525 is an equidigital number, since it uses as much as digits as its factorization.

1275023977525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51000959111 (or 51000959106 counting only the distinct ones).

The product of its (nonzero) digits is 9261000, while the sum is 55.

The spelling of 1275023977525 in words is "one trillion, two hundred seventy-five billion, twenty-three million, nine hundred seventy-seven thousand, five hundred twenty-five".