1255223535 has 48 divisors (see below), whose sum is σ = 2093300352. Its totient is φ = 641934720.

The previous prime is 1255223533. The next prime is 1255223537. The reversal of 1255223535 is 5353225521.

It is an interprime number because it is at equal distance from previous prime (1255223533) and next prime (1255223537).

It is not a de Polignac number, because 1255223535 - 2¹ = 1255223533 is a prime.

It is a super-2 number, since 2×1255223535² = 3151172245635792450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255223496 and 1255223505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255223533) 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, 2399784 + ... + 2400306.

It is an arithmetic number, because the mean of its divisors is an integer number (43610424).

Almost surely, 2^1255223535 is an apocalyptic number.

1255223535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255223535 is a deficient number, since it is larger than the sum of its proper divisors (838076817).

1255223535 is an equidigital number, since it uses as much as digits as its factorization.

1255223535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 635 counting only the distinct ones).

The product of its digits is 45000, while the sum is 33.

The square root of 1255223535 is about 35429.1339860291. The cubic root of 1255223535 is about 1078.7157617427.

The spelling of 1255223535 in words is "one billion, two hundred fifty-five million, two hundred twenty-three thousand, five hundred thirty-five".