1255537525 has 24 divisors (see below), whose sum is σ = 1700453664. Its totient is φ = 912014400.

The previous prime is 1255537489. The next prime is 1255537553. The reversal of 1255537525 is 5257355521.

It is a happy number.

It is not a de Polignac number, because 1255537525 - 2⁹ = 1255537013 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 276322 + ... + 280828.

It is an arithmetic number, because the mean of its divisors is an integer number (70852236).

It is a vampire number, since it can be written as 22535 ⋅ 55715 (with its own digits).

Almost surely, 2^1255537525 is an apocalyptic number.

It is an amenable number.

1255537525 is a deficient number, since it is larger than the sum of its proper divisors (444916139).

1255537525 is a wasteful number, since it uses less digits than its factorization.

1255537525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5541 (or 5536 counting only the distinct ones).

The product of its digits is 262500, while the sum is 40.

The square root of 1255537525 is about 35433.5649490705. The cubic root of 1255537525 is about 1078.8056999660.

The spelling of 1255537525 in words is "one billion, two hundred fifty-five million, five hundred thirty-seven thousand, five hundred twenty-five".