1255859402 has 16 divisors (see below), whose sum is σ = 2211089280. Its totient is φ = 523678608.

The previous prime is 1255859401. The next prime is 1255859443. The reversal of 1255859402 is 2049585521.

It is a self number, because there is not a number n which added to its sum of digits gives 1255859402.

It is not an unprimeable number, because it can be changed into a prime (1255859401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211702 + ... + 1212737.

It is an arithmetic number, because the mean of its divisors is an integer number (138193080).

Almost surely, 2^1255859402 is an apocalyptic number.

1255859402 is a deficient number, since it is larger than the sum of its proper divisors (955229878).

1255859402 is a wasteful number, since it uses less digits than its factorization.

1255859402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424485.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 1255859402 is about 35438.1066367830. The cubic root of 1255859402 is about 1078.8978817516.

The spelling of 1255859402 in words is "one billion, two hundred fifty-five million, eight hundred fifty-nine thousand, four hundred two".