1255464400 has 30 divisors (see below), whose sum is σ = 3016254182. Its totient is φ = 502185600.

The previous prime is 1255464377. The next prime is 1255464449. The reversal of 1255464400 is 44645521.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 257409936 + 998054464 = 16044^2 + 31592^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1568931 + ... + 1569730.

Almost surely, 2^1255464400 is an apocalyptic number.

1255464400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255464400 is an abundant number, since it is smaller than the sum of its proper divisors (1760789782).

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

1255464400 is a wasteful number, since it uses less digits than its factorization.

1255464400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138679 (or 3138668 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1255464400 is about 35432.5330734341. The cubic root of 1255464400 is about 1078.7847556303.

The spelling of 1255464400 in words is "one billion, two hundred fifty-five million, four hundred sixty-four thousand, four hundred".