1255400634 has 8 divisors (see below), whose sum is σ = 2510801280. Its totient is φ = 418466876.

The previous prime is 1255400617. The next prime is 1255400659. The reversal of 1255400634 is 4360045521.

It is a sphenic number, since it is the product of 3 distinct primes.

1255400634 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104616714 + ... + 104616725.

It is an arithmetic number, because the mean of its divisors is an integer number (313850160).

Almost surely, 2^1255400634 is an apocalyptic number.

1255400634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255400634 is a wasteful number, since it uses less digits than its factorization.

1255400634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209233444.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1255400634 is about 35431.6332392398. The cubic root of 1255400634 is about 1078.7664912193.

The spelling of 1255400634 in words is "one billion, two hundred fifty-five million, four hundred thousand, six hundred thirty-four".