1255720525 has 12 divisors (see below), whose sum is σ = 1562604352. Its totient is φ = 1001021040.

The previous prime is 1255720517. The next prime is 1255720547. The reversal of 1255720525 is 5250275521.

It is not a de Polignac number, because 1255720525 - 2³ = 1255720517 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 11 ways as a sum of consecutive naturals, for example, 81669 + ... + 95818.

Almost surely, 2^1255720525 is an apocalyptic number.

It is an amenable number.

1255720525 is a deficient number, since it is larger than the sum of its proper divisors (306883827).

1255720525 is a wasteful number, since it uses less digits than its factorization.

1255720525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177780 (or 177775 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 34.

The square root of 1255720525 is about 35436.1471523076. The cubic root of 1255720525 is about 1078.8581109449.

The spelling of 1255720525 in words is "one billion, two hundred fifty-five million, seven hundred twenty thousand, five hundred twenty-five".