1255714621 has 24 divisors (see below), whose sum is σ = 1504624896. Its totient is φ = 1044156960.

The previous prime is 1255714511. The next prime is 1255714631. The reversal of 1255714621 is 1264175521.

It is not a de Polignac number, because 1255714621 - 2¹⁹ = 1255190333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255714631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 780600 + ... + 782206.

It is an arithmetic number, because the mean of its divisors is an integer number (62692704).

Almost surely, 2^1255714621 is an apocalyptic number.

It is an amenable number.

1255714621 is a deficient number, since it is larger than the sum of its proper divisors (248910275).

1255714621 is a wasteful number, since it uses less digits than its factorization.

1255714621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2082 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 1255714621 is about 35436.0638474422. The cubic root of 1255714621 is about 1078.8564201260.

The spelling of 1255714621 in words is "one billion, two hundred fifty-five million, seven hundred fourteen thousand, six hundred twenty-one".