1255352021 has 48 divisors (see below), whose sum is σ = 1722749760. Its totient is φ = 901393920.

The previous prime is 1255352003. The next prime is 1255352039. The reversal of 1255352021 is 1202535521.

It is an interprime number because it is at equal distance from previous prime (1255352003) and next prime (1255352039).

It is not a de Polignac number, because 1255352021 - 2⁶ = 1255351957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255352051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 377261 + ... + 380573.

It is an arithmetic number, because the mean of its divisors is an integer number (35890620).

Almost surely, 2^1255352021 is an apocalyptic number.

1255352021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1255352021 is a deficient number, since it is larger than the sum of its proper divisors (467397739).

1255352021 is a wasteful number, since it uses less digits than its factorization.

1255352021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394 (or 3387 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1255352021 is about 35430.9472213205. The cubic root of 1255352021 is about 1078.7525666466.

Adding to 1255352021 its reverse (1202535521), we get a palindrome (2457887542).

The spelling of 1255352021 in words is "one billion, two hundred fifty-five million, three hundred fifty-two thousand, twenty-one".